485 results on '"Robert L. Cook"'
Search Results
2. Reasons for not seeking alcohol treatment among a sample of Florida adults with HIV who perceived the need for treatment
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Christina E. Parisi, Nanyangwe D. Siuluta, Shantrel S. Canidate, Robert L. Cook, Yan Wang, Maya Widmeyer, Charurut Somboonwit, Jessy G. Dévieux, and Natalie Chichetto
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Medicine (General) ,R5-920 ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
Abstract Background A minority of people who need alcohol treatment receive it. Unhealthy alcohol use is common among people with HIV (PWH) and can lead to negative health outcomes. The aims of this multi-methods study are to (1) quantitatively describe the prevalence, psychosocial characteristics, and demographic traits of a sample of PWH currently receiving HIV care in Florida who had a self-reported need for alcohol treatment but did not seek care and (2) qualitatively explore reasons why PWH did not seek treatment. Methods PWH enrolled in the Florida Cohort Study between October 2020 and February 2023 who had drinking history (N = 487) completed a cross-sectional survey that asked if there was a time when they recognized they needed help for their drinking but did not seek it. If yes, they were asked an open-ended follow-up question about reasons why they did not seek care. Demographic and behavioral differences between those who did and did not endorse a time when they needed alcohol treatment were determined using multivariable logistic regression, while qualitative data were analyzed with thematic analysis based in the Social-Ecological Model to assess reasons for not seeking care at the individual, social, and systems levels. Results A quarter of PWH (n = 129) with lifetime drinking indicated a time they needed care but did not seek it. Patients who endorsed a time where they perceived the need for treatment but did not seek it were more likely to endorse current at-risk drinking and a history of ever trying to reduce their drinking or formally seek professional alcohol treatment. The most common reasons participants did not seek care were individual level factors and included shame, denial, fear, wanting to do it on their own, not feeling ready, and not wanting to seek care. Conclusions PWH experienced barriers largely at the individual level that prevented them from seeking alcohol treatment despite a recognized need, though many eventually sought care. Providers and public health professionals should consider helping to address various barriers, particularly internal barriers, when designing interventions to help PWH seek care.
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- 2024
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3. Reasons for Use and Perceived Effects of Medical Cannabis: A Cross-Sectional Statewide Survey
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Ruba Sajdeya, Sebastian Jugl, Yan Wang, Juan G. Perez, Sophie Maloney, Catalina Lopez-Quintero, Amie J. Goodin, Almut G. Winterstein, and Robert L. Cook
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medical cannabis ,medical marijuana ,marijuana as a therapeutic ,cannabis use behaviors ,Medicine - Abstract
Introduction: Medical cannabis (MC) is available upon certification for one of several qualifying conditions in Florida, USA. Previous studies suggested that some people seek cannabis for medical conditions/symptoms beyond those legally permitted. However, data remain limited on patient motives for seeking MC and their experiences around its impact on their health. We aimed to compare reported qualifying conditions for MC certification with the most frequently self-reported reasons for using MC while assessing the alignment between the two and understanding the perceived impacts of MC on self-reported conditions and symptoms. Methods: We conducted a cross-sectional study using survey data from the Medical Marijuana and Me (M3) Data Bank of individuals receiving MC in Florida, USA, in 2022. Participants were recruited via convenience sampling from nine MC clinics/clinic networks across Florida and were asked to fill out an online survey. The study measures included sociodemographic variables, self-reported health conditions, self-reported main reasons for using MC, self-reported qualifying conditions for MC certification, and self-reported perceived impact of MC on health conditions. We cross-tabulated reported qualifying conditions and reasons for MC use and reported the perceived impact per condition. Results: A total of 632 participants completed the survey, of whom 396 (62.66%) were female and 471 (74.53%) were non-Hispanic white. The median (IQR) age was 45 (35, 58). The most frequently reported qualifying conditions were post-traumatic stress disorder (PTSD) (n = 187, 29.59%), a condition not on the qualifying conditions list (n = 175, 27.69%), medical conditions of the same kind/comparable to those listed (n = 140, 22.15%), and chronic nonmalignant pain (n = 62, 25.63%). The top ten most frequently reported reasons for using MC were anxiety (n = 383, 60.60%), chronic pain (n = 278, 43.99%), depression (n = 252, 39.87%), PTSD (n = 220, 34.81%), headaches/migraine (n = 134, 21.20%), fibromyalgia (n = 67, 10.60%), attention-deficit hyperactivity disorder (ADHD) (n = 59, 9.34%), bipolar disorder (n = 53, 8.39%), high blood pressure (n = 41, 6.49%), and cancer (n = 18,2.85%). Of respondents, 70–90% with each qualifying condition reported it as one of the main reasons for using MC. Most respondents reported improvement of anxiety (n = 430/451, 95.34%), depression (n = 381/392, 97.20%), chronic pain (n = 305/310, 98.39%), insomnia/sleeping problems (n = 225/295, 86.44%), PTSD (n = 247/270, 91.48%), headaches/migraine (n = 172/218, 78.90%), ADHD (n = 82/123, 66.67%), bipolar disorder (n = 79/89, 88.76%), and fibromyalgia (n = 77/82, 93.90%). Most respondents were unsure/reported no change in blood pressure (n = 93/162, 57.41%). A small percentage reported perceived worsening impacts on their conditions. Conclusion: Qualifying conditions and self-reported reasons for using MC aligned for most respondents. Yet, a notable proportion of respondents sought MC for broader treatment effects beyond those delineated by the officially recognized qualifying conditions in Florida, USA. Most patients perceived positive effects, including those with limited available evidence on efficacy.
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- 2024
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4. Lessons from the COVID-19 pandemic: the unequal burden of COVID-19 on vulnerable populations in the Brazilian Central-West
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Kamila Cardoso dos Santos, Grazielle Rosa da Costa e Silva, Winny Éveny Alves Moura, Larissa Silva Magalhães, Bruno Vinícius Diniz e Silva, Gabriel Francisco da Silva Filho, Lívia Melo Villar, Karlla Antonieta Amorim Caetano, Megmar Aparecida dos Santos Carneiro, Catalina Lopez-Quintero, Robert L. Cook, Krishna Vaddiparti, Sheila Araujo Teles, and Regina Maria Bringel Martins
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COVID-19 ,Vulnerable Populations ,Socioeconomic Factors ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract: This study aimed to estimate the prevalence and identify social factors and preventive strategies associated with the coronavirus disease 2019 (COVID-19) in socio and economically vulnerable people (recyclable waste pikers, immigrants/refugees, and homeless people) in Goiânia, Goiás State, Central-Western Brazil. A cross-sectional study was conducted from July 2020 to October 2020. COVID-19 positivity was defined as a positive total anti-SARS-COV-2 antibody test and/or RNA test for SARS-COV-2. Univariable and multiple regression analyses were performed to identify the variables associated with COVID-19. Of the 594 participants, 47.3% were recyclable waste pickers, 29.6% were immigrants/refugees, and 23.1% were homeless people. The positivity for SARS-CoV-2 RNA was 14.1%, whereas for anti-SARS-CoV-2 a total of 30.8% were positive, and 39.4% were positive for at least one COVID-19 marker. Among the 541 individuals, being immigrants/refugees, not wearing a surgical mask, and having three or more people sleeping in the same room were associated with SARS-CoV-2 infection, while using TV news as the main source of information about the pandemic was a protective predictor of COVID-19. This study revealed ethnic and socioeconomic inequalities in the prevalence of COVID-19 among impoverished people in Brazil. Additionally, a high prevalence of COVID-19 was detected in all three groups. Developing new strategies to combat and prevent communicable diseases affecting this population is essential for mitigating future and ongoing pandemics.
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- 2024
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5. Improved Post-Traumatic Stress Disorder Symptoms and Related Sleep Disturbances after Initiation of Medical Marijuana Use: Evidence from a Prospective Single Arm Pilot Study
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Krishna Vaddiparti, Yiyang Liu, Sarah Bottari, Carly Crump Boullosa, Zhi Zhou, Yan Wang, John Williamson, and Robert L. Cook
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medical marijuana ,cannabis ,post-traumatic stress disorder ,sleep ,sleep quality ,Medicine - Abstract
Introduction: Post-traumatic stress disorder (PTSD) is a debilitating disorder experienced by a subgroup of individuals following a life-threatening trauma. Several US states have passed laws permitting the medical use of marijuana (MMJ) by individuals with PTSD, despite very little scientific indication on the appropriateness of marijuana as a therapy for PTSD. This prospective pilot study of adults with confirmed PTSD in Florida (FL) investigated whether PTSD symptoms, sleep quality, affect, and general physical and mental health/well-being improved post-initiation of MMJ treatment. Methods: Participants, N = 15, were recruited from two MMJ clinics in Gainesville and Jacksonville, FL. To be eligible, participants had to be 18 years of age or older, not currently on MMJ, and willing to abstain from recreational marijuana, if using any, until the State Medical Cannabis Card was obtained, screen positive for PTSD. Participants were assessed at baseline (pre-MMJ initiation) and 30 and 70 days post-MMJ initiation using the Pittsburgh Sleep Quality Index (PSQI), PTSD Checklist for DSM-5 (PCL-5), Positive and Negative Affect Schedule (PANAS), PROMIS Global Health V1.2, and semi-structured marijuana and other substance use assessment. Results: PTSD symptom severity as measured by total PCL-5 score improved significantly at 30- and 70-day follow-ups. Similarly, statistically significant reductions in nightmares were reported at 30- and 70-day follow-ups. Corresponding improvements in sleep were noticed with participants reporting increased duration of sleep hours, sleep quality, sleep efficiency, and total PSQI score. Likewise, negative affect and global mental health improved significantly at follow-up. According to the post hoc analyses, the most statistically significant changes occurred between baseline and 30-day follow-up. The exception to this pattern was nightmares, which did not show significant improvement until day 70. Conclusion: The findings of this study highlight the potential of MMJ in improving patient outcomes for those with PTSD, particularly concerning sleep disturbances, which often do not respond to currently available treatments.
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- 2023
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6. Proceedings of the 2023 Cannabis Clinical Outcomes Research Conference
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Amie J. Goodin, Phuong T. Tran, Sam McKee, Ruba Sajdeya, Jeevan Jyot, Robert L. Cook, Yan Wang, and Almut G. Winterstein
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cannabis clinical outcomes research conference ,conference proceedings ,medical marijuana ,cannabis ,cannabinoids ,cannabidiol ,marijuana efficacy ,marijuana clinical outcomes ,mental health ,public health ,Medicine - Abstract
The Consortium for Medical Marijuana Clinical Outcomes Research, a multi-university collaboration established by the state of Florida in the USA, hosted its third annual Cannabis Clinical Outcomes Research Conference (CCORC) in May 2023. CCORC was held as a hybrid conference, with a scientific program consisting of in-person sessions, with some sessions livestreamed to virtual attendees. CCORC facilitated and promoted up-to-date research on the clinical effects of medical cannabis, fostering collaboration and active involvement among scientists, policymakers, industry professionals, clinicians, and other stakeholders. Three themes emerged from conference sessions and speaker presentations: (1) disentangling conflicting evidence for the effects of medical cannabis on public health, (2) seeking solutions to address barriers faced when conducting clinical cannabis research – especially with medical cannabis use in special populations such as those who are pregnant, and (3) unpacking the data behind cannabis use and mental health outcomes. The fourth annual CCORC is planned for the summer of 2024 in Florida, USA.
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- 2023
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7. Trends in Recommended Screening and Monitoring Tests for Users of HIV Pre-Exposure Prophylaxis Before and During the COVID-19 Pandemic
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Ikenna F. Unigwe, PharmD, Robert L. Cook, MD, Jennifer W. Janelle, MD, and Haesuk Park, PhD
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Pre-exposure prophylaxis ,HIV ,COVID-19 ,sexually transmitted infection ,preventative medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Introduction: To ensure the health and safety of persons taking pre-exposure prophylaxis to prevent HIV infection, the 2017 Centers for Disease Control and Prevention guidelines recommended initial and follow-up laboratory testing. We assessed the trends in adherence rates to recommended laboratory testing among pre-exposure prophylaxis users and identified factors associated with HIV testing among pre-exposure prophylaxis users from 2016 to 2020 and also examined rate changes during the COVID-19 pandemic in 2020. Methods: We conducted a retrospective cohort study assessing the rates and trends of recommended laboratory testing among commercially insured pre-exposure prophylaxis users from 2016 to 2020, using the MarketScan database. We examined the proportion of pre-exposure prophylaxis users adhering to the following initial and follow-up laboratory testing: (1) HIV, creatinine clearance, hepatitis B virus, hepatitis C virus, and sexually transmitted infections (chlamydia/gonorrhea and syphilis) within 7 days before pre-exposure prophylaxis initiation; (2) HIV 90 days after initiation; and (3) HIV, creatinine clearance, and sexually transmitted infections 180 days after pre-exposure prophylaxis initiation. We used general linear models to examine trends and multivariable logistic regression to identify predictors of ≥1 HIV test within 180 days after index pre-exposure prophylaxis. Results: We identified 19,581 new pre-exposure prophylaxis users. Most were male (96%) and aged 18–34 years (55%). Adherence rates to recommended testing increased from 2016 through 2019 (e.g., 9.0%–13.6% for all initial screening tests 7 days before initiation, 42.1%–44.6% for HIV testing 90 days after initiation, 33.8%–40.6% for all follow-up tests within 180 days after initiation), but all rates decreased during the COVID-19 pandemic (12.4%, 33.6%, and 31.6%, respectively). Younger age (aged 13–17 years: AOR=0.44, 95% CI=0.28, 0.71) and ages 18–34 years (AOR=0.80, 95% CI=0.74, 0.86) were associated with a significantly lower likelihood of getting an HIV test within 180 days after initiation than ages 35–44 years, and female sex (AOR=0.64, 95% CI=0.55, 0.74) were associated with a significantly lower likelihood than male sex. Pre-exposure prophylaxis users with a history of sexually transmitted infections had a higher likelihood (AOR=1.27, 95% CI=1.16, 1.40) of getting tested than those without. Conclusions: Initial screening and follow-up testing rates were lower than those recommended by the Centers for Disease Control and Prevention. Public health efforts are needed to ensure that patients have access to needed laboratory testing during pandemics or natural disasters and to educate patients and clinicians about the importance of screening and monitoring tests to ensure the safety and health of pre-exposure prophylaxis users.
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- 2023
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8. Protocol of a Combined Cohort and Cross-Sectional Study of Persons Receiving Medical Cannabis in Florida, USA: The Medical Marijuana and Me (M3) Study
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Ruba Sajdeya, Hannah J. Fechtel, Gabriel Spandau, Amie J. Goodin, Joshua D. Brown, Sebastian Jugl, Nicole E. Smolinski, Almut G. Winterstein, Robert L. Cook, and Yan Wang
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medical marijuana ,mmj ,clinical outcomes ,effectiveness ,medical cannabis ,Medicine - Abstract
Significant knowledge gaps regarding the effectiveness and safety of medical cannabis (MC) create clinical challenges for MC physicians, making treatment recommendations and patients choosing treatment among the growing number of options offered in dispensaries. Additionally, data describing the characteristics of people who use MC and the products and doses they receive are lacking. The Medical Marijuana and Me (M3) Study was designed to collect patient-centered data from MC users. We aim to describe preferred MC use patterns that patients report as “most effective” for specific health conditions and symptoms, identify user characteristics associated with such use patterns, characterize adverse effects, including cannabis use disorder, identify products and patient characteristics associated with adverse effects, describe concurrent prescription medication use, and identify concomitant medication use with potential drug-MC interaction risk. Among MC initiators, we also aim to quantify MC use persistence and identify reasons for discontinuation, assess MC utilization pattern trajectories over time, describe outcome trajectories of primary reasons for MC use and determine factors associated with different trajectories, track changes in concomitant substance and medication use after MC initiation, and identify factors associated with such changes. M3 is a combined study comprised of: (1) a prospective cohort of MC initiators completing surveys at enrollment, 3 months, and 9 months after MC initiation and (2) a cross-sectional study of current MC users. A multidisciplinary committee including researchers, physicians, pharmacists, patients, and dispensary personnel designed and planned study protocols, established study measures, and created survey questionnaires. M3 will recruit 1,000–1,200 participants aged ≥18 years, with ∼50% new and ∼50% current MC patients from MC clinics across Florida, USA. Study enrollment started in May 2022 and will continue until the target number of patients is achieved. Survey domains include sociodemographic characteristics, physical and mental health, cannabis use history, reasons for MC use and discontinuation, MC products and use patterns, concurrent use of prescription medications and other substances, and side effects. Data collected in the M3 Study will be available for interested researchers affiliated with the Consortium for Medical Marijuana Clinical Outcomes Research. The M3 Study and Databank will be the largest cohort of current and new MC users in Florida, USA, which will provide data to support MC-related health research necessary to inform policy and clinical practice and ultimately improve patient outcomes.
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- 2023
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9. Pet ownership is associated with harmful alcohol use among a cohort of people with HIV: a brief research report
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Jennifer W. Applebaum, Shelby E. McDonald, Eric C. Porges, Maya Widmeyer, Humberto E. Fabelo, Darlene A. Kertes, and Robert L. Cook
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pets ,companion animals ,people with HIV ,alcohol use ,substance use ,HIV/AIDS ,Psychiatry ,RC435-571 - Abstract
Research suggests that people with HIV (PWH), who are at high risk for alcohol and substance use, may rely on relationships with pets for companionship and stress relief. There may be common mechanisms underlying both substance use and attachment to pets. The purpose of this brief research report was to compare alcohol and substance use behaviors between pet owners and non-owners among a cohort of PWH. Participants (n = 735) in a survey study of PWH in Florida were asked about their alcohol and substance use behaviors, whether they owned a pet, and their sociodemographic characteristics. We used bivariate analyses and logistic regression to examine differences in alcohol and substance use behaviors between pet owners and non-owners. Pet owners had higher mean AUDIT scores than non-owners (Mpet = 5, Mnopet = 4, z = −3.07, p = 0.002). Pet owners were more likely than non-owners to use alcohol in a harmful or hazardous way (AUDIT score ≥ 8), above and beyond sociodemographic characteristics (OR = 1.65, p = 0.052). Pet owners were more likely to have ever used most substances than non-owners, and more likely to currently use alcohol (X2(1) = 12.97, p = 0.000), marijuana or hashish (X2(1) = 6.82, p = 0.009), and amyl nitrate/poppers (X2(1) = 11.18, p = 0.001). Pet owners may be more likely to use alcohol and other substances at higher rates than non-owners. Reasons for owning a pet and using substances may be similar, such as coping with stress.
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- 2023
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10. Resting state connectivity in people living with HIV before and after stopping heavy drinking
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Joseph M. Gullett, Jason DeFelice, Veronica L. Richards, Eric C. Porges, Ronald A. Cohen, Varan Govind, Teddy Salan, Yan Wang, Zhi Zhou, and Robert L. Cook
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human immunodeficiency virus ,alcohol use ,resting-state functional magnetic resonance imaging ,contingency management ,cessation ,Psychiatry ,RC435-571 - Abstract
BackgroundHeavy alcohol use in people living with HIV (PLWH) has widespread negative effects on neural functioning. It remains unclear whether experimentally-induced reduction in alcohol use could reverse these effects. We sought to determine the effects of 30-days drinking cessation/reduction on resting state functional connectivity in people with and without HIV.MethodsThirty-five participants (48.6% PLWH) demonstrating heavy alcohol use attempted to stop drinking for 30 days via contingency management (CM). MRI was acquired at baseline and after thirty days, and functional connectivity across five resting-state fMRI (rsfMRI) networks was calculated with the Conn toolbox for Matlab and examined in relation to transdermal alcohol concentration (TAC) recorded by the ankle-worn secure continuous remote alcohol monitor (SCRAM) and self-reported alcohol use (timeline follow-back; TLFB). Associations between alcohol use and reduction, HIV status, functional connectivity, and change in functional connectivity across five major rsfMRI networks were determined relative to the pre- and post-CM timepoints.ResultsBaseline resting-state functional connectivity was not significantly associated with average TAC-AUC during the pre-CM period, though higher self-reported alcohol use over the preceding 30 days was significantly associated with higher baseline connectivity within the Dorsal Attention Network (DAN; p-FDR
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- 2023
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11. Clinician barriers, perceptions, and practices in treating patients with hepatitis C virus and substance use disorder in the United States
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Haesuk Park, Carolyn Brown, Debbie L. Wilson, Pei-Lin Huang, Pilar Hernández-Con, Patrick Horne, Amie Goodin, Amanda Joseph, Rich Segal, Roniel Cabrera, and Robert L. Cook
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HCV ,Direct-acting antivirals ,Survey ,SUD ,Medicaid ,Medicine - Abstract
The likelihood of clinicians prescribing direct-acting antiviral (DAA) therapy for patients with chronic hepatitis C virus (HCV) and substance use disorder (SUD) was assessed via a survey emailed throughout the United States to clinicians (physicians and advanced practice providers) in gastroenterology, hepatology, and infectious disease specialties. Clinicians’ perceived barriers and preparedness and actions associated with current and future DAA prescribing practices of HCV-infected patients with SUD were assessed. Of 846 clinicians presumably receiving the survey, 96 completed and returned it. Exploratory factor analyses of perceived barriers indicated a highly reliable (Cronbach alpha = 0.89) model with five factors: HCV stigma and knowledge, prior authorization requirements, and patient- clinician-, and system-related barriers. In multivariable analyses, after controlling for covariates, patient-related barriers (P
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- 2023
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12. The impact of pet ownership on healthcare access and utilization among people with HIV
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Jennifer W. Applebaum, Shelby E. McDonald, Maya Widmeyer, Humberto E. Fabelo, and Robert L. Cook
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Medicine ,Science - Published
- 2023
13. Emotion regulation and cognitive function as mediating factors for the association between lifetime abuse and risky behaviors in women of color
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Karina Villalba, Lisa H. Domenico, Robert L. Cook, Julia O’Connor, Kyndester Michael-Samaroo, Maria Jose Del Pino Espejo, Pilar Martin, and Jessy G. Dévieux
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Medicine ,Science - Published
- 2023
14. Molecular Epidemiology of HIV-1 Subtype B Infection across Florida Reveals Few Large Superclusters with Metropolitan Origin
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Shannan N. Rich, Mattia C. F. Prosperi, Simon Dellicour, Bram Vrancken, Robert L. Cook, Emma C. Spencer, Marco Salemi, and Carla Mavian
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HIV ,phylodynamics ,molecular epidemiology ,infection clusters ,molecular networks ,HIV in southeastern United States ,Microbiology ,QR1-502 - Abstract
ABSTRACT Florida is considered an epicenter of HIV in the United States. The U.S. federal plan for Ending the HIV Epidemic (EHE) within 10 years prioritizes seven of Florida’s 67 counties for intervention. We applied molecular epidemiology methods to characterize the HIV infection networks in the state and infer whether the results support the EHE. HIV sequences (N = 34,446) and associated clinical/demographic metadata of diagnosed people with HIV (PWH), during 2007 to 2017, were retrieved from the Florida Department of Health. HIV genetic networks were investigated using MicrobeTrace. Associates of clustering were identified through boosted logistic regression. Assortative trait mixing was also assessed. Bayesian phylogeographic methods were applied to evaluate evidence of imported HIV-1 lineages and illustrate spatiotemporal flows within Florida. We identified nine large clusters spanning all seven EHE counties but little evidence of external introductions, suggesting—in the absence of undersampling—an epidemic that evolved independently from the rest of the country or other external influences. Clusters were highly assortative by geography. Most of the sampled infections (82%) did not cluster with others in the state using standard molecular surveillance methods despite satisfactory sequence sampling in the state. The odds of being unclustered were higher among PWH in rural regions, and depending on demographics. A significant number of unclustered sequences were observed in counties omitted from EHE. The large number of missing sequence links may impact timely detection of emerging transmission clusters and ultimately hinder the success of EHE in Florida. Molecular epidemiology may help better understand infection dynamics at the population level and underlying disparities in disease transmission among subpopulations; however, there is also a continuous need to conduct ethical discussions to avoid possible harm of advanced methodologies to vulnerable groups, especially in the context of HIV stigmatization. IMPORTANCE The large number of missing phylogenetic linkages in rural Florida counties and among women and Black persons with HIV may impact timely detection of ongoing and emerging transmission clusters and ultimately hinder the success of epidemic elimination goals in Florida.
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- 2022
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15. Proceedings of the 2021 Cannabis Clinical Outcomes Research Conference
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Amie J. Goodin, Debbie L. Wilson, Robert L. Cook, Yan Wang, Joshua Brown, and Almut G. Winterstein
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conference proceedings ,medical marijuana ,cannabis ,marijuana clinical outcomes ,Medicine - Abstract
The Cannabis Clinical Outcomes Research Conference (CCORC) 2021 was held virtually on April 8 and 9, 2021. The conference was hosted by the Consortium for Medical Marijuana Clinical Outcomes Research, a research organization instituted by the state legislature of Florida in the United States. The inaugural annual CCORC 2021 was organized as a scientific meeting to foster and disseminate research on medical marijuana (MM) clinical outcomes, while promoting engagement among MM researchers, patients, clinicians, policymakers, and industry partners. Key conference themes included: (a) the disconnect between policy, practice, and evidence and steps towards reconciliation, (b) approaches to overcome common barriers to MM research, and (c) the use of focused translational approaches utilizing both mechanistic and clinical research methodology to tackle the complexities of MM outcomes. CCORC 2022 is planned for spring 2022 in Orlando, Florida, United States.
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- 2021
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16. Defining the optimal cut-point of self-reported ART adherence to achieve viral suppression in the era of contemporary HIV therapy: a cross-sectional study
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Emma O’Halloran Leach, Huiyin Lu, Joshua Caballero, Jennifer E. Thomas, Emma C. Spencer, and Robert L. Cook
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HIV ,Viral suppression ,Self-reported ,Adherence ,ART ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Abstract Background When considering adherence to antiretroviral therapy (ART) for HIV, many different cut-points are used. The primary goals of this study were to identify a level of self-reported medication adherence that best distinguished HIV viral suppression from non-suppression, and to compare the ability of a single-item and a 3-item adherence questionnaire to predict HIV viral suppression. Methods This cross-sectional analysis included 380 persons with HIV (PWH) from the Florida Cohort study who completed a self-reported ART adherence measure within 30-days of having an HIV viral load test. We used Receiver Operating Characteristic (ROC) curve analyses and ROCContrast to compare the ability of a single-item and a 3-item self-reported adherence measure to predict HIV viral suppression (defined as ≤ 200 copies/mL). We used the Youden index and chi square statistics to assess specific cut-points, and repeated the analysis with a different definition of HIV viral suppression (≤ 1000 copies/mL). Results The mean percent adherence was 92.4% using the single-item score and 90.4% using the 3-item score; 81.6% had viral suppression. The areas under the curve for the single-item and 3-item adherence measures were generally poor overall and not significantly different from each other (0.589 and 0.580, p = 0.67). The Youden index identified cut-points of 93% and 89% as maximizing the sensitivity and specificity for the single-item and 3-item measures, respectively, whereas a cut-point of 80% on the single-item measure was best able to discriminate those with viral suppression (58% vs. 84%, p < 0.001). Results were similar with viral suppression defined as ≤ 1000 copies/mL. Conclusions In this sample of PWH, a single question on medication adherence was as good as a 3-item questionnaire in predicting HIV viral suppression, although neither had good discriminatory ability. A cut-point close to 90% adherence maximized sensitivity and specificity, although viral suppression was very similar for nearly all measures above 80%.
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- 2021
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17. Direct‐Acting Antiviral Treatment Use Remains Low Among Florida Medicaid Beneficiaries With Chronic Hepatitis C
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Haesuk Park, Hyun Jin Song, Xinyi Jiang, Linda Henry, Robert L. Cook, and David R. Nelson
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Medicaid prior authorization (PA) policies for treatment of hepatitis C virus (HCV) with direct‐acting antiviral (DAA) therapy are changing. We aimed to evaluate effects of changes in PA requirements on treatment uptake and to determine the factors associated with DAA treatment among Florida Medicaid beneficiaries with HCV. This is a retrospective cohort analysis of Florida’s Medicaid administrative claims and electronic medical records (2013‐2018). A total of 14,063 newly diagnosed patients with HCV were grouped based on human immunodeficiency virus (HIV) co‐infection and/or a substance use disorder (SUD) (7,735 HCV mono‐infected with a SUD, 5,180 HCV mono‐infected without a SUD, 564 HCV/HIV co‐infected with a SUD, and 584 HCV/HIV co‐infected without a SUD). Although the treatment rate increased three‐fold after June 1, 2016, when a fibrosis‐stage restriction was eliminated, only 8% received DAAs. Compared to HCV mono‐infected without a SUD, HCV mono‐infected with a SUD and HCV/HIV co‐infected with a SUD were 47% (adjusted hazard ratio, 0.53; 95% confidence interval, 0.47‐0.60) and 59% (adjusted hazard ratio, 0.41; 95% confidence interval, 0.28‐0.61) less likely to initiate DAAs. Those with HCV/HIV/SUD did not experience a DAA initiation increase after a fibrosis‐stage restriction was eliminated. Compared with Whites, Blacks were less likely to receive DAAs but were more likely to complete treatment. Use of medication‐assisted therapy was low, despite those on medication‐assisted therapy being 60% more likely to initiate DAA therapy and no more likely to discontinue therapy. Conclusion: Despite changes in Florida’s Medicaid PA requirements for DAA treatment, only 8% received treatment. Disparities in treatment access were found among patients with HIV and a SUD, and who were Black.
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- 2021
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18. Recruitment, experience, and retention among women with HIV and hazardous drinking participating in a clinical trial
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Shantrel S. Canidate, Christa L. Cook, Deepthi Varma, Giselle D. Carnaby, Nicole Ennis, Nichole E. Stetten, and Robert L. Cook
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Women ,Alcohol ,Participation ,HIV ,Clinical research ,Hazardous drinking ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Despite efforts by the NIH to enhance the participation of women and minorities in clinical research, women with HIV continue to remain underrepresented in alcohol intervention research. The purpose of this study is to better understand the reasons why women with HIV and hazardous drinking participated in the WHAT-IF? study and to discuss their experience (positive or negative) in the study. The WHAT-IF? study was a randomized clinical trial that evaluated pharmacotherapy for a reduction in drinking among women with HIV. Methods Convenience and theoretical sampling were used to recruit women with HIV and hazardous drinking to complete qualitative interviews. These women had previously completed a clinical alcohol intervention trial and had consented to be contacted in the future for study-related purposes. The biopsychosocial model was used to frame the interview questions that assessed multiple determinants of drinking behavior and helped explain linkages to broader health constructs. Results A total of 20 women with HIV and hazardous drinking completed the qualitative interview. Several factors were identified by the women as influential in their decision to participate in the WHAT-IF? study, such as the ability to quit or reduce their drinking to nonhazardous levels (biological), the ability to gain knowledge or a greater understanding of the negative effects of hazardous drinking on HIV disease progression (psychological), and peer pressure and monetary compensation (social). Also, the women identified factors (positive or negative) associated with their clinical trial experience, such as the effects of the study medication on the woman’s body (biological), thoughts and feelings toward study procedures (i.e. medication, lab work, study assessments) and the length of the study (psychological), and the interactions with the WHAT-IF? study staff (social). Conclusion Recruiting and retaining women with HIV in alcohol intervention research remains a challenge. Findings from this study suggest that women with HIV who are hazardous drinkers may benefit from participating in research studies that could help them to reduce or quit their drinking, increase their knowledge about specific behavior changes, and earn monetary compensation. Also, positive staff interactions may be instrumental in retaining minority women in alcohol intervention research.
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- 2020
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19. Assessing risk factors for latent and active tuberculosis among persons living with HIV in Florida: A comparison of self-reports and medical records
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Nana Ayegua Hagan Seneadza, Awewura Kwara, Michael Lauzardo, Cindy Prins, Zhi Zhou, Marie Nancy Séraphin, Nicole Ennis, Jamie P. Morano, Babette Brumback, and Robert L. Cook
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Medicine ,Science - Abstract
Purpose This study examined factors associated with TB among persons living with HIV (PLWH) in Florida and the agreement between self-reported and medically documented history of tuberculosis (TB) in assessing the risk factors. Methods Self-reported and medically documented data of 655 PLWH in Florida were analyzed. Data on sociodemographic factors such as age, race/ethnicity, place of birth, current marital status, education, employment, homelessness in the past year and ‘ever been jailed’ and behavioural factors such as excessive alcohol use, marijuana, injection drug use (IDU), substance and current cigarette use were obtained. Health status information such as health insurance status, adherence to HIV antiretroviral therapy (ART), most recent CD4 count, HIV viral load and comorbid conditions were also obtained. The associations between these selected factors with self-reported TB and medically documented TB diagnosis were compared using Chi-square and logistic regression analyses. Additionally, the agreement between self-reports and medical records was assessed. Results TB prevalence according to self-reports and medical records was 16.6% and 7.5% respectively. Being age ≥55 years, African American and homeless in the past 12 months were statistically significantly associated with self-reported TB, while being African American homeless in the past 12 months and not on antiretroviral therapy (ART) were statistically significantly associated with medically documented TB. African Americans compared to Whites had odds ratios of 3.04 and 4.89 for self-reported and medically documented TB, respectively. There was moderate agreement between self-reported and medically documented TB (Kappa = 0.41). Conclusions TB prevalence was higher based on self-reports than medical records. There was moderate agreement between the two data sources, showing the importance of self-reports. Establishing the true prevalence of TB and associated risk factors in PLWH for developing policies may therefore require the use of self-reports and confirmation by screening tests, clinical signs and/or microbiologic data.
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- 2022
20. Associations amongst form of cocaine used (powder vs crack vs both) and HIV-related outcomes
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Yiyang Liu, Veronica L. Richards, Nioud Mulugeta Gebru, Emma C. Spencer, and Robert L. Cook
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Cocaine ,Crack ,HIV infection ,PWH ,Viral suppression ,Treatment adherence ,Psychology ,BF1-990 ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
Introduction: Cocaine (including powder and crack) use is common among people with HIV (PWH). We identified socio-demographic and behavioral factors associated with cocaine use (overall and various forms) among PWH; we also examined differences in HIV treatment outcomes across cocaine exposure groups. Methods: The study sample (N = 1166) was derived from two cohorts of PWH in Florida between 2014 and 2020. Baseline data were linked to the Enhanced HIV/AIDS Reporting System (eHARS) which tracks HIV viral load. Socio-demographics and polysubstance use were compared by cocaine use and the three cocaine use groups (powder only n = 101, crack only n = 91, or both n = 65). The association between the three cocaine use groups, ART adherence, and HIV viral suppression (
- Published
- 2021
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21. SARS-CoV-2 infection in vulnerable population in Goiania, Central Brazil
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Kamila Cardoso dos Santos, Grazielle Rosa da Costa e Silva, Winny Éveny Alves Moura, Larissa Silva Magalhães, Brunna Rodrigues de Oliveira, Paulie Marcelly R. dos Santos Carvalho, Karlla Antonieta Amorim Caetano, Megmar Aparecida dos Santos Carneiro, Leonora Rezende Pacheco, Clayton Luiz Borges, Juliana Alves Parente-Rocha, Gabriela Silvério Bazílio, Robert L. Cook, Krishna Vaddiparti, Claci Fátima Weirich Rosso, and Sheila Araújo Teles
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COVID-19 ,SARS-CoV-2 ,Vulnerable populations ,Microbiology ,QR1-502 - Published
- 2022
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22. Practice Patterns and Training Needs Among Physicians Certifying Patients for Medical Marijuana in Florida
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Ruba Sajdeya, Anna Shavers, Jennifer Jean-Jacques, Brianna Costales, Sebastian Jugl, Carly Crump, Yan Wang, Luran Manfio, R. Nathan Pipitone, Martha S. Rosenthal, Almut G. Winterstein, and Robert L. Cook
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Little is known about the clinical training or practice experiences among physicians who certify patients for medical marijuana. The objective of this study was to determine information sources, factors influencing recommendations, clinical practices in patient assessment, communications, and recommendations, and priority areas for additional training among physicians who certify patients for medical marijuana. Methods: A cross-sectional state-wide anonymous survey of registered medical marijuana physicians in Florida between June and October 2020 was administered. Numerical responses were quantified using counts and percentages. The frequencies for “often” and “always” responses were aggregated when appropriate. Results: Among 116 respondents, the mean (standard deviation) age was 57 (12) years old, and 70% were male. The most frequently used information sources were research articles (n = 102, 95%), followed by online sources (n = 99, 93%), and discussions with other providers and dispensary staff (n = 84, 90%). Safety concerns were most influential in patient recommendations (n = 39, 39%), followed by specific conditions (n = 30, 30%) and patient preferences (n = 26, 30%). Ninety-three physicians (92%) reported they “often” or “always” perform a patient physical exam. Eighty-four (77%) physicians provided specific administration route recommendations. Half (n = 56) “often” or “always” provided specific recommendations for Δ-9-tetrahydrocannabinol: cannabidiol ratios, while 69 (62%) “often” or “always” provided specific dose recommendations. Online learning/training modules were the most preferred future training mode, with 88 (84%) physicians “likely” or “very likely” to participate. The top 3 desired topics for future training were marijuana-drug interactions (n = 84, 72%), management of specific medical conditions or symptoms (n = 83, 72%), and strategies to reduce opioids or other drugs use (n = 78, 67%). Conclusions: This survey of over 100 medical marijuana physicians indicates that their clinical practices rely on a blend of research and anecdotal information sources. While physicians report clinical factors as influential during patient recommendation, patient assessment practices and treatment regimen recommendations vary substantially and rely on experimental approaches. More research is needed to inform evidence-based practice and training, especially considering details on drug interactions, risk-benefit of treatment for specific clinical conditions, and strategies to reduce opioid use.
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- 2021
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23. HIV care provider perceptions and approaches to managing unhealthy alcohol use in primary HIV care settings: a qualitative study
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Natalie E. Chichetto, Zachary L. Mannes, Megan K. Allen, Robert L. Cook, and Nicole Ennis
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Addiction treatment ,Alcohol ,Alcohol screening ,Education ,HIV ,Knowledge ,Medicine (General) ,R5-920 ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
Abstract Background HIV care providers often serve as the specialist and the primary care point-of-contact for persons living with HIV (PLWH) and unhealthy alcohol use. The purpose of the present qualitative study was to understand HIV care provider perceptions and approaches to managing unhealthy alcohol use in HIV primary care settings. Methods Using a semi-structured interview guide, in-depth interviews were conducted among 14 HIV care providers (5 medical doctors, 5 nurse practitioners/physician assistants, 2 medical assistants, 2 clinical administrative staff) in private and public HIV clinics, across urban and rural areas of Florida. Interviews were coded using a grounded theory approach with inter-rater consensus. Results Six themes were identified. In summary, providers reported (1) inconsistent assessment of alcohol consumption, as well as (2) varying levels of confidence in self-report of alcohol use which may be affected by patient provider rapport and trust. While providers (3) acknowledge potential negative impacts of alcohol use on health outcomes and HIV treatment, providers reported (4) inconsistent recommendations regarding alcohol use among their patients. Lastly, providers reported (5) limited resources for patients with unhealthy alcohol use and (6) low confidence in their ability to help patients reduce use. Conclusions Results from our study suggest salient differences in provider approaches to the assessment and management of unhealthy alcohol use in HIV primary care settings. Implementation of care for unhealthy alcohol use in these settings may be facilitated through use of clinically useful, validated alcohol use assessments and use of evidence-based recommendations of alcohol use/non-use among PLWH. Training in brief intervention techniques for alcohol reduction may increase provider confidence and support in the management of unhealthy alcohol use among PLWH.
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- 2019
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24. Brief report: the association between recreational versus therapeutic marijuana use on hazardous alcohol consumption and alcohol-associated behavioral consequences among adults living with HIV in Florida
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Zachary L. Mannes, Erin G. Ferguson, Larry E. Burrell, Robert L. Cook, and Nicole Ennis
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HIV/AIDS ,Hazardous alcohol use ,Marijuana use ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Though marijuana use has previously been associated with risky alcohol use, studies often do not delineate between the effect of recreational versus therapeutic marijuana use, particularly among people living with HIV (PLWH). In this study, we examined the association between recreational versus therapeutic marijuana use to manage HIV symptoms (i.e., improve appetite/gain weight, induce sleep, relieve nausea/vomiting, relieve pain, relieve anxiety/depression/stress) on hazardous alcohol consumption and associated behavioral consequences among PLWH. Methods PLWH (N = 703) recruited from community health centers in Florida completed questionnaires assessing sociodemographics, marijuana use motives (i.e., recreational versus therapeutic), alcohol use, and alcohol-associated behavioral consequences. Hazardous alcohol use was defined as consuming 5 or more drinks on one occasion at least monthly or > 14 drinks per week for men, or 4 drinks on one occasion at least monthly or > 7 drinks per week for women over the past 12 months, while alcohol-associated behavioral consequences were assessed via the Short Inventory of Problems Revised (SIP-R). A one-way analysis of covariance (ANCOVA) assessed differences in average number of alcohol-associated behavioral consequences between recreational and therapeutic marijuana users, and non-users, while multivariate logistic regression analysis evaluated the association between reason for marijuana use and hazardous alcohol consumption. Results There was a significant effect of marijuana use group on SIP-R score after controlling for covariates [F (2, 579) = 3.04, p = 0.048], with post hoc analysis demonstrated significantly fewer alcohol-associated behavioral consequences among therapeutic marijuana users (1.27) compared to recreational users (3.35; p = 0.042). Compared to non-users, therapeutic marijuana users demonstrated significantly lower odds of hazardous drinking (AOR = 0.42, 95% CI = 0.18–0.96, p = 0.041), while recreational marijuana users were 64% more likely to report hazardous drinking (AOR = 1.64, 95% CI = 1.08–2.50, p = 0.019). Conclusions Findings from this study add to the literature by demonstrating how differing marijuana use motives are associated with hazardous alcohol consumption among PLWH. Given our findings showing greater risk of hazardous alcohol consumption among recreational marijuana users and lower risk among therapeutic marijuana users, results from this study may help inform interventions to reduce harmful alcohol consumption and associated adverse consequences among PLWH.
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- 2018
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25. The Effect of Health Literacy on a Brief Intervention to Improve Advance Directive Completion: A Randomized Controlled Study
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Paige C. Barker, Neal P. Holland, Oliver Shore, Robert L. Cook, Yang Zhang, Carrie D. Warring, and Melanie G. Hagen
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Objective Completion of an advance directive (AD) document is one component of advanced care planning. We evaluated a brief intervention to enhance AD completion and assess whether the intervention effect varied according to health literacy. Methods A randomized controlled study was conducted in 2 internal medicine clinics. Participants were over 50, without documented AD, no diagnosis of dementia, and spoke English. Participants were screened for health literacy utilizing REALM-SF. Participants were randomized in a 1:1 ratio to the intervention, a 15-minute scripted introduction (grade 7 reading level) to our institution’s AD forms (grade 11 reading level) or to the control, in which subjects were handed blank AD forms without explanation. Both groups received reminder calls at 1, 3, and 5 months. The primary outcome was AD completion at 6 months. Results Five hundred twenty-nine subjects were enrolled; half were of limited and half were of adequate health literacy. The AD completion rate was 21.7% and was similar in the intervention vs. the control group (22.4% vs 22.2%, P = .94).More participants with adequate health literacy completed an AD than those with limited health literacy (28.4% vs 16.2%, P = .0008), although the effect of the intervention was no different within adequate or limited literacy groups. Conclusion A brief intervention had no impact on AD completion for subjects of adequate or limited health literacy. Practice Implications Our intervention was designed for easy implementation and to be accessible to patients of adequate or limited health literacy. This intervention was not more likely than the control (handing patients an AD form) to improve AD completion for patients of either limited or adequate health literacy. Future efforts and research to improve AD completion rates should focus on interventions that include: multiple inperson contacts with patients, contact with a trusted physician, documents at 5th grade reading level, and graphic/video decision aids. Trial Registration Number NCT02702284, Protocol ID IRB201500776
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- 2021
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26. Facilitators and barriers to a contingency management alcohol intervention involving a transdermal alcohol sensor
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Karina Villalba, Christa Cook, Jessy G. Dévieux, Gladys E. Ibanez, Etinosa Oghogho, Camila Neira, and Robert L. Cook
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Public health ,Clinical research ,Social sciences ,Health sciences ,Psychology ,Stigma ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Research on contingency management is limited due to feasibility issues with monitoring adherence. Incentives usually depend on objective measures to verify compliance; therefore, biological markers for identifying alcohol use are not as dependable for the use of financial contingency studies. The Secure Continuous Remote Alcohol Monitor (SCRAM) is an objective alcohol biosensor that can be locked onto a person's ankle to address these limitations. In preparation for a large, contingency management study for HIV-positive and HIV-negative persons with heavy drinking, the aims for the study were to (1) explore barriers and facilitators to participating in a contingency management intervention using the SCRAM ankle monitor as the potential alcohol measure for the intervention; (2) explore levels of appropriate compensation for using the SCRAM and for study assessments as part of a contingency management intervention study; and (3) attitudes and beliefs on lifestyle changes as a consequence of wearing the SCRAM among HIV-positive and HIV-negative heavy drinkers in Florida. Five focus groups were conducted and we collected qualitative data from thirty-seven individuals (18 men; 19 women). During the analysis, six themes were identified as barriers and facilitators for participation in a contingency management intervention using the SCRAM sensor to measure alcohol use: (1) health assessment, (2) monetary incentives including payment structure and levels of compensation, (3) stigma associated with wearing the SCRAM sensor, (4) aesthetics and other related concerns with wearing the SCRAM sensor, (5) motivation to stop drinking, and (6) social support. Stigma was a major barrier for wearing the SCRAM sensor; however, if participants were motivated to change their behavior then the monetary incentives became a facilitator to wearing the sensor. In addition to the financial contingency method, social support may further increase the odds for participants to change their behaviors.
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- 2020
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27. Epidemiology of HIV, syphilis, and hepatitis B and C among manual cane cutters in low-income regions of Brazil
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Déborah Ferreira Noronha de Castro Rocha, Luana Rocha da Cunha Rosa, Carla de Almeida Silva, Brunna Rodrigues de Oliveira, Thaynara Lorrane Silva Martins, Regina Maria Bringel Martins, Marcos André de Matos, Megmar Aparecida dos Santos Carneiro, Juliana Pontes Soares, Ana Cristina de Oliveira e Silva, Márcia Maria de Souza, Robert L. Cook, Karlla Antonieta Amorim Caetano, and Sheila Araujo Teles
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Sexually transmitted diseases ,Rural population ,Poverty areas ,Viral hepatitis vaccines ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background In recent decades the epidemic of asymptomatic sexually transmitted infections has extended deep into Brazil, including small towns and rural areas. The purpose of this study was to investigate the epidemiology of HIV, syphilis, and hepatitis B (HBV) and hepatitis C viruses (HCV), and to evaluate immunization coverage against hepatitis B in a group of rural workers in Brazil. Methods In 2016, a cross-sectional study was conducted with 937 manual sugarcane cutters of the Midwest and Northeast Regions of Brazil. All individuals were interviewed and screened for HIV, syphilis, HBV and HCV. Correlating factors with lifetime HBV infection were investigated using logistic regression. Positive Predictive Values, Negative Predictive Values, sensitivity and specificity were also calculated relative to vaccination against Hepatitis B, comparing anti-HBs titers to vaccination reports. Results Most reported previous hospitalization (55%), occupational injuries (54%), sharing of personal items (45.8%), alcohol consumption (77.2%), multiple sexual partners in previous 12 months (39.8%), and no condom use during sexual intercourse in last 12 months (46.5%). Only 0.2% reported using injection drugs. Anti-HIV-1 was detected in three individuals (0.3%). Serological markers of lifetime syphilis (treponemal test) were detected in 2.5% (95% CI: 1.6–3.6) of participants, and active syphilis (treponemal test and VDRL) present in 1.2%. No samples were positive for anti-HCV. The prevalence of lifetime HBV infection (current or past infection) was 15.9%, and 0.7% (95% CI 0.4 to 1.5) were HBsAg-positive. Previous hospitalization (OR 1.53, CI 1.05–2.24, p
- Published
- 2018
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28. Perceived benefits and negative consequences of alcohol consumption in women living with HIV: a qualitative study
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Robert L. Cook, Christa L. Cook, Manju Karki, Kathleen M. Weber, Kathleen A. Thoma, Chelsea M. Loy, Lakshmi Goparaju, and Bridgett Rahim-Williams
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Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Women living with HIV have increased prevalence of medical and psychological comorbidities that could be adversely affected by alcohol consumption. Little is known about their unique motivations for drinking or perceptions of HIV-related consequences. In preparation for an alcohol intervention study, we sought to better understand reasons for drinking and perceived consequences of alcohol consumption among a sample of women living with HIV. Methods Four focus groups, with a total of 24 adult women (96 % African-American, 88 % HIV-positive), were conducted in Jacksonville, FL, Washington, DC and Chicago, IL. Focus group discussions were tape-recorded and transcribed verbatim; a conventional content analysis approach was used to identify themes, that were then grouped according to a biopsychosocial model. Results Regarding reasons for drinking, women described themes that included biological (addiction, to manage pain), psychological (coping, to escape bad experiences, to feel in control), and social (peer pressure, family). Themes related to consequences from alcohol included biological (damage to body, poor adherence to medications), psychological (risky or regrettable behavior, memory loss), and social (jail, loss of respect, poor choices). When discussing how their drinking impacted their health, women focused on broader issues, rather than HIV-specific issues. Conclusion Many women living with HIV are drinking alcohol in order to self-manage pain or emotions, and their perceived consequences from drinking extend beyond HIV-specific medical issues. Most participants described themes related to psychological issues and situations that are common in women living with HIV. Interventions to address drinking should inquire more specifically about drinking to manage pain or emotion, and help women to recognize the potential adverse impact of alcohol on comorbid health issues, including their own HIV infection.
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- 2016
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29. Employing Molecular Phylodynamic Methods to Identify and Forecast HIV Transmission Clusters in Public Health Settings: A Qualitative Study
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Shannan N. Rich, Veronica L. Richards, Carla N. Mavian, William M. Switzer, Brittany Rife Magalis, Karalee Poschman, Shana Geary, Steven E. Broadway, Spencer B. Bennett, Jason Blanton, Thomas Leitner, J. Lucas Boatwright, Nichole E. Stetten, Robert L. Cook, Emma C. Spencer, Marco Salemi, and Mattia Prosperi
- Subjects
molecular epidemiology ,HIV phylogenetics ,surveillance ,HIV prevention ,qualitative research ,focus groups ,Microbiology ,QR1-502 - Abstract
Molecular HIV surveillance is a promising public health strategy for curbing the HIV epidemic. Clustering technologies used by health departments to date are limited in their ability to infer/forecast cluster growth trajectories. Resolution of the spatiotemporal dynamics of clusters, through phylodynamic and phylogeographic modelling, is one potential strategy to develop a forecasting tool; however, the projected utility of this approach needs assessment. Prior to incorporating novel phylodynamic-based molecular surveillance tools, we sought to identify possible issues related to their feasibility, acceptability, interpretation, and utility. Qualitative data were collected via focus groups among field experts (n = 17, 52.9% female) using semi-structured, open-ended questions. Data were coded using an iterative process, first through the development of provisional themes and subthemes, followed by independent line-by-line coding by two coders. Most participants routinely used molecular methods for HIV surveillance. All agreed that linking molecular sequences to epidemiological data is important for improving HIV surveillance. We found that, in addition to methodological challenges, a variety of implementation barriers are expected in relation to the uptake of phylodynamic methods for HIV surveillance. The participants identified several opportunities to enhance current methods, as well as increase the usability and utility of promising works-in-progress.
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- 2020
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30. Cost Comparisons between Home- and Clinic-Based Testing for Sexually Transmitted Diseases in High-Risk Young Women
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Kenneth J. Smith, Robert L. Cook, and Roberta B. Ness
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Gynecology and obstetrics ,RG1-991 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Home testing for chlamydia and gonorrhea increases screening rates, but the cost consequences of this intervention are unclear. We examined the cost differences between home-based and clinic-based testing and the cost-effectiveness of home testing based on the DAISY study, a randomized controlled trial. Direct and indirect costs were estimated for home and clinic testing, and cost-effectiveness was calculated as cost per additional test performed. In the clinic testing group, direct costs were $49/test and indirect costs (the costs of seeking or receiving care) were $62/test. Home testing cost was $25/test. We found that home testing was cost saving when all testing for all patients was considered. However cost savings were not seen when only asymptomatic tests or when patient subgroups were considered. A home testing program could be cost saving, depending on whether changes in clinic testing frequency occur when home testing is available.
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- 2007
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31. Mental health, substance use, and risky sexual behaviors among women living with <scp>HIV</scp>
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Caroline D. Deaterly, Deepthi S. Varma, Yancheng Li, Preeti Manavalan, and Robert L. Cook
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General Nursing - Published
- 2023
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32. Changes in frequency of cannabis use among people with HIV during the COVID-19 pandemic: a multi-methods study to explore the underlying reasons for change
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Christina E. Parisi, Yan Wang, Deepthi S. Varma, Krishna Vaddiparti, Gladys E. Ibañez, Liset Cruz Carrillo, and Robert L. Cook
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Psychiatry and Mental health ,Clinical Psychology ,Medicine (miscellaneous) - Published
- 2023
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33. Association of therapeutic and recreational reasons for alcohol use with alcohol demand
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Erin Ferguson, Andrew Fiore, Ali M. Yurasek, Robert L. Cook, and Jeff Boissoneault
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Pharmacology ,Psychiatry and Mental health ,Pharmacology (medical) - Abstract
Motives for alcohol use and behavioral economic measures of demand are associated with alcohol consumption and alcohol-related problems. However, it is unclear how differences in reasons for alcohol use may affect alcohol demand. Additionally, although alcohol is commonly used to self-manage conditions such as pain and sleep problems, the impact of these reasons for alcohol use on alcohol demand is not well characterized. The present study addressed this gap. Participants were adults recruited via Amazon Mechanical Turk as part of a larger study investigating health behaviors. Analyses included participants who reported alcohol use in the past year (
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- 2023
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34. Substance Use and Adherence to HIV Pre-Exposure Prophylaxis in Studies Enrolling Men Who Have Sex with Men and Transgender Women: A Systematic Review
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Nioud Mulugeta Gebru, Shantrel S. Canidate, Yiyang Liu, Sage E. Schaefer, Emmely Pavila, Robert L. Cook, and Robert F. Leeman
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Infectious Diseases ,Social Psychology ,Public Health, Environmental and Occupational Health - Published
- 2022
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35. Does the Relationship Between HIV Stigma Subtypes and Viral Suppression Differ by Age?: A Stratified Analysis of Data from the Florida Medical Monitoring Project
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Renessa S. Williams, Zhi Zhou, Christa Cook, Robert Lucero, Emma C. Spencer, and Robert L. Cook
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Infectious Diseases ,Social Psychology ,Public Health, Environmental and Occupational Health - Published
- 2022
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36. Information Needs and Requirements for Decision Support in Primary Care: An Analysis of Chronic Pain Care.
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Christopher A. Harle, Nate C. Apathy, Robert L. Cook 0002, Elizabeth C. Danielson, Julie Diiulio, Sarah M. Downs, Robert W. Hurley, Burke W. Mamlin, Laura G. Militello, and Shilo H. Anders
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- 2018
37. Human papillomavirus positivity at three anatomical sites among transgender women in Central Brazil
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Brunna Rodrigues de Oliveira, Bruno Vinícius Diniz e Silva, Kamila Cardoso dos Santos, Karlla Antonieta Amorim Caetano, Giana Mota, Vera Aparecida Saddi, Silvia Helena Rabelo dos Santos, Luisa Lina Villa, Krishna Vaddiparti, Robert L. Cook, Sheila Araujo Teles, and Megmar Aparecida dos Santos Carneiro
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Microbiology (medical) ,Infectious Diseases ,Public Health, Environmental and Occupational Health ,Dermatology - Published
- 2023
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38. Developing and validating a natural language processing algorithm to extract preoperative cannabis use status documentation from unstructured narrative clinical notes
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Ruba Sajdeya, Mamoun T Mardini, Patrick J Tighe, Ronald L Ison, Chen Bai, Sebastian Jugl, Gao Hanzhi, Kimia Zandbiglari, Farzana I Adiba, Almut G Winterstein, Thomas A Pearson, Robert L Cook, and Masoud Rouhizadeh
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Health Informatics - Abstract
Objective This study aimed to develop a natural language processing algorithm (NLP) using machine learning (ML) techniques to identify and classify documentation of preoperative cannabis use status. Materials and Methods We developed and applied a keyword search strategy to identify documentation of preoperative cannabis use status in clinical documentation within 60 days of surgery. We manually reviewed matching notes to classify each documentation into 8 different categories based on context, time, and certainty of cannabis use documentation. We applied 2 conventional ML and 3 deep learning models against manual annotation. We externally validated our model using the MIMIC-III dataset. Results The tested classifiers achieved classification results close to human performance with up to 93% and 94% precision and 95% recall of preoperative cannabis use status documentation. External validation showed consistent results with up to 94% precision and recall. Discussion Our NLP model successfully replicated human annotation of preoperative cannabis use documentation, providing a baseline framework for identifying and classifying documentation of cannabis use. We add to NLP methods applied in healthcare for clinical concept extraction and classification, mainly concerning social determinants of health and substance use. Our systematically developed lexicon provides a comprehensive knowledge-based resource covering a wide range of cannabis-related concepts for future NLP applications. Conclusion We demonstrated that documentation of preoperative cannabis use status could be accurately identified using an NLP algorithm. This approach can be employed to identify comparison groups based on cannabis exposure for growing research efforts aiming to guide cannabis-related clinical practices and policies.
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- 2023
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39. Applying the social ecological model to explore HIV-related stigma in Florida: A qualitative study
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Renessa S. Williams, Veronica L. Richards, Nichole E. Stetten, Shantrel S. Canidate, Angel Algarin, Andrew Fiore, Christa Cook, Robert J. Lucero, Emma C. Spencer, and Robert L. Cook
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Psychiatry and Mental health ,Clinical Psychology ,Social Psychology ,Health Policy ,Public Health, Environmental and Occupational Health - Published
- 2023
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40. Prevention of liver fibrosis and steatosis progression among heavy drinkers with and without HIV after 30-day drinking-reduction program
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Seungjun Ahn, Veronica Richards, Emmanuel Thomas, Dushyantha Jayaweera, Varan Govind, Zhigang Li, Ronald A. Cohen, and Robert L. Cook
- Abstract
BackgroundThis is the first attempt to assess changes in liver abnormalities before and after contingency management (CM) to reduce heavy drinking beyond 30-days of follow-up.ObjectiveThe main objective was to determine whether liver fibrosis and steatosis, measured using FibroScan, change significantly between baseline, 30-days, and 90-days among older adults who drink heavily at baseline, enrolled in the CM intervention for alcohol reduction. The secondary aim of the study was to assess whether the changes in liver outcome measures differ across alcohol consumption categories.MethodsA prospective study (ClinicalTrials.govregistry:NCT03353701) of 46 older adults (63% male, 76.1% Black, mean age = 56.4) with heavy drinking at the baseline, living with or without HIV infection was evaluated. A linear mixed-effects model was used to analyze the FibroScan Transient Elastography (TE for fibrosis) and Controlled Attenuation Parameter (CAP for steatosis).ResultsThere were no significant changes in liver fibrosis and steatosis measures after 90-days of drinking abstinence among heavy drinkers with or without stratified TE or CAP values at baseline.ConclusionsCM for drinking reduction may not be effective at least short-term prospective in preventing liver fibrosis and steatosis progression for subjects without severe liver disease at baseline.
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- 2023
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41. Identifying the best measures of alcohol consumption to predict future HIV viral suppression trajectories
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Veronica L. Richards, Robert F. Leeman, Yan Wang, Christa Cook, Cindy Prins, Nicole Ennis, Emma C. Spencer, and Robert L. Cook
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Infectious Diseases ,Social Psychology ,Public Health, Environmental and Occupational Health - Published
- 2022
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42. Longitudinal trajectories of HIV care engagement since diagnosis among persons with HIV in the Florida Ryan White program
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Yiyang Liu, Shannan N. Rich, Khairul A. Siddiqi, Zhaoyi Chen, Mattia Prosperi, Emma Spencer, and Robert L. Cook
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Infectious Diseases ,Social Psychology ,Public Health, Environmental and Occupational Health - Published
- 2022
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43. Comorbidities among persons living with HIV (PLWH) in Florida: a network analysis
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Shyfuddin Ahmed, Angel B. Algarin, Hsu Thadar, Zhi Zhou, Tanjila Taskin, Krishna Vaddiparti, Karina Villalba, Yan Wang, Nicole Ennis, Jamie P. Morano, Charurut Somboonwit, Robert L Cook, and Gladys E. Ibañez
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Health (social science) ,Social Psychology ,Public Health, Environmental and Occupational Health - Published
- 2022
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44. Age-Associated Gut Dysbiosis, Marked by Loss of Butyrogenic Potential, Correlates With Altered Plasma Tryptophan Metabolites in Older People Living With HIV
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Smita Ghare, Richa Singhal, Vaughn Bryant, Sabina Gautam, Chanakya Charan Tirumala, Praneet Kumar Srisailam, Andrea Reyes-Vega, Dushan Ghooray, Craig J. McClain, Kristi Hoffman, Joseph Petrosino, Kendall Bryant, Varan Govind, Ronald Cohen, Robert L. Cook, and Shirish Barve
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aging ,Tryptophan ,HIV ,HIV Infections ,Pilot Projects ,Middle Aged ,butyrate ,serotonin ,kynurenine ,16S rRNA sequencing ,F/B ratio ,gut microbial dysbiosis ,Infectious Diseases ,Cross-Sectional Studies ,Tandem Mass Spectrometry ,Dysbiosis ,Humans ,Pharmacology (medical) ,Supplement Article ,tryptophan metabolism ,Aged - Abstract
Background: Imbalance in tryptophan (TRP) metabolism and its neuroactive metabolites, serotonin and kynurenine (KYN), is a known pathogenic mechanism underlying neurocognitive impairment. Gut microbiota plays an important role in TRP metabolism, and the production of these neuroactive molecules affects neurocognitive function. Although both HIV infection and normal aging independently induce gut dysbiosis and influence TRP metabolism, their interactive effects on compositional/functional changes in gut microbiota and consequent alterations in TRP metabolites remain largely undetermined. Methods: Older people living with HIV infection (PLWH, aged 50–70 years, n = 22) were enrolled in this cross-sectional pilot study. Metagenomic analysis of fecal microbiome using 16S Ribosomal ribonucleic acid gene sequencing and metabolomics analysis of plasma using mass spectrometry with a reverse-phase iquid chromatography tandem mass spectrometry were performed. Statistical analyses included the univariate linear regression and Spearman correlation analyses. Results: Age-associated changes in plasma levels of key neuroactive TRP metabolites, serotonin and KYN, were seen in PLWH. Specifically, we observed age-dependent decreases in serotonin and increases in KYN and KYN-to-TRP ratio, indicative of dysfunctional TRP metabolism. Furthermore, the gut dysbiosis seen in older PLWH is characterized by a reduction of Firmicutes/Bacteroidetes ratio and butyrate-producing microbial families Lachnospiraceae and Lactobacillaceae. Of importance, correspondent with gut dysbiosis, increasing age was significantly associated with decreased plasma butyrate levels, which in turn correlated positively with serotonin and negatively with KYN/TRP ratio. Conclusions: Age-dependent gut microbial dysbiosis distinguished by a decrease in butyrogenic potential is a key pathogenic feature associated with the shift in TRP metabolism from serotonin to KYN in older PLWH.
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- 2022
45. Oral CBD treatment is associated to an anti-inflammatory gene expression signature in myeloid cells of people living with HIV
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Simone Marini, Amanda Huber, Melanie N. Cash, Marco Salemi, Robert L Cook, Paul Borsa, and Carla Mavian
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HIV-related comorbidities appear to be related to chronic inflammation, a condition characterizing people living with HIV (PLWH). Prior work indicates that cannabidiol (CBD) might reduce inflammation; however, the genetics underpinning this effect are not well investigated. Our main objective is to detect gene expression alterations in human peripheral blood mononuclear cells (PBMCs) from PLWH after at least one month of CBD treatment.We collected PBMCs from three HIV-positive subjects at baseline and after CBD treatment (at least 27 days) via single-cell RNA sequencing. We obtained a coherent signature, characterized by an anti-inflammatory activity, of differentially expressed genes in myeloid cells.Our study shows how CBD is associated with alterations of gene expression in myeloid cells after CBD treatment.
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- 2023
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46. Using alcohol biosensors and biomarkers to measure changes in drinking: Associations between transdermal alcohol concentration, phosphatidylethanol, and self-report in a contingency management study of persons with and without HIV
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Veronica L. Richards, Yan Wang, Eric C. Porges, Joseph M. Gullett, Robert F. Leeman, Zhi Zhou, Nancy P. Barnett, and Robert L. Cook
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Pharmacology ,Psychiatry and Mental health ,Pharmacology (medical) - Published
- 2023
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47. Correspondence between alcohol use measured by a wrist-worn alcohol biosensor and self-report via ecological momentary assessment over a 2-week period
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Veronica L. Richards, Nancy P. Barnett, Robert L. Cook, Robert F. Leeman, Timothy Souza, Stuart Case, Cindy Prins, Christa Cook, and Yan Wang
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Psychiatry and Mental health ,Medicine (miscellaneous) ,Toxicology - Abstract
Transdermal alcohol biosensors measure alcohol use continuously, passively, and non-invasively. There is little field research on the Skyn biosensor, a new-generation, wrist-worn transdermal alcohol biosensor, and little evaluation of its sensitivity and specificity and the day-level correspondence between transdermal alcohol concentration (TAC) and number of self-reported drinks.Participants (N = 36; 61% male, MUsing a minimum TAC threshold of 5 μg/L plus coder review, the biosensor had sensitivity of 54.7% and specificity of 94.6% for distinguishing drinking from nondrinking days. Without coder review, the sensitivity was 78.1% and the specificity was 55.2%. Peak TAC (β = 0.92, p 0.0001) and TAC-AUC (β = 1.60, p 0.0001) were significantly associated with number of drinks. Females had significantly higher TAC levels than males for the same number of drinks.Skyn-derived TAC can be used to measure alcohol use under naturalistic drinking conditions, additional research is needed to accurately identify drinking episodes based on Skyn TAC readings.
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- 2022
48. Impulsivity and linkage to HIV Care among People living with HIV in St. Petersburg, Russia
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Arnab K. Dey, Nicole Ennis, Debbie M. Cheng, Elena Blokhina, Anita Raj, Emily Quinn, Sally Bendiks, Tibor Palfai, Eugene M. Dunne, Robert L Cook, Evgeny Krupitsky, and Jeffrey H. Samet
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Adult ,Male ,Impulsivity ,Social Work ,Social Psychology ,Substance-Related Disorders ,8.1 Organisation and delivery of services ,HIV Infections ,Article ,Russia ,Clinical Research ,Behavioral and Social Science ,Humans ,Substance Abuse, Intravenous ,PWID ,Public Health, Environmental and Occupational Health ,Substance Abuse ,HIV ,CD4 Lymphocyte Count ,Infectious Diseases ,Good Health and Well Being ,Impulsive Behavior ,Public Health and Health Services ,HIV/AIDS ,Female ,Public Health ,Intravenous ,Infection ,Health and social care services research - Abstract
This study evaluated the association between impulsivity and linkage to HIV care among Russians living with HIV recruited from an inpatient narcology hospital. Linking Infectious and Narcology Care (LINC) study participants who completed the Barratt Impulsiveness Scale (BIS) were included in these analyses. The primary independent variable was impulsivity score which was categorized as high impulsivity (BIS score > 71) vs. low impulsivity (BIS score
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- 2022
49. The Relationship of Alcohol to ART Adherence Among Black MSM in the U.S.: Is it Any Different Among Black MSM in the South?
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Stephen Maisto, Shantrel S. Canidate, Sheldon D. Fields, Robert L. Cook, Nancy Schaefer, Christina Parisi, Nioud Mulugeta Gebru, Robert F. Leeman, Noelani Powers, and Eric W. Schrimshaw
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Male ,medicine.medical_specialty ,Social Psychology ,Population ,ART adherence ,HIV Infections ,Men who have sex with men ,Sexual and Gender Minorities ,Environmental health ,medicine ,Humans ,Homosexuality, Male ,Black men who have sex with men ,Southern US ,education ,Original Paper ,Text Messaging ,education.field_of_study ,business.industry ,Public health ,Public Health, Environmental and Occupational Health ,United States ,Art adherence ,Black or African American ,Health psychology ,Infectious Diseases ,Tailored interventions ,Alcohol ,business ,Inclusion (education) ,Qualitative research - Abstract
Alcohol-using Black MSM (Men who have sex with men) are disproportionately impacted by HIV in the U.S.—particularly in the southern U.S.—despite the availability of antiretroviral therapy (ART). The purpose of this study was to summarize the current evidence on alcohol use and ART adherence among Black MSM in the U.S. and in the South and to identify future research needs. A systematic review was conducted using eight databases to identify relevant peer-reviewed articles published between January 2010 and April 2021. The authors also snowballed remaining studies and hand-searched for additional studies. Including both quantitative and qualitative studies, five published studies examined alcohol and ART adherence among Black MSM in the U.S. The search identified 240 articles, the study team reviewed 114 in full-text and determined that only five met the inclusion criteria. Three of the five included studies identified alcohol use as a barrier to ART adherence. In conclusions, the general lack of literature on HIV disparities among alcohol-using Black MSM in the U.S. (specifically in the South) indicates a critical need for research on this population’s unique risks and needs to inform the development of tailored interventions. Supplementary Information The online version contains supplementary material available at 10.1007/s10461-021-03479-3.
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- 2021
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50. Subjective Cognitive Complaints: Predictors and Health Outcomes in People Living with HIV
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Huiyin Lu, Renessa Williams, Andrew J. Fiore, Vaughn E. Bryant, Zhi Zhou, Eric C. Porges, Robert A. Fieo, Robert L. Cook, and Veronica L Richards
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medicine.medical_specialty ,Social Psychology ,Human immunodeficiency virus (HIV) ,HIV Infections ,Anxiety ,medicine.disease_cause ,Article ,Cognition ,Intervention (counseling) ,Outcome Assessment, Health Care ,medicine ,Humans ,Depression (differential diagnoses) ,Depression ,business.industry ,Public health ,Public Health, Environmental and Occupational Health ,Health psychology ,Infectious Diseases ,Cohort ,Marijuana Use ,medicine.symptom ,business ,Clinical psychology - Abstract
There is a paucity of research on the prevalence of subjective cognitive complaints in people living with human immunodeficiency virus, along with the predictors and outcomes related to these complaints. We assessed demographics, substance use and psychiatric predictors, and HIV-related outcomes associated with subjective cognitive complaint items from the Cognitive Difficulties Scale. The sample consisted of 889 people living with HIV in the survey-based Florida Cohort. Results of multivariable regression models indicated that age (45-54), hazardous alcohol consumption, more frequent marijuana use and psychiatric symptoms (depression, anxiety, PTSD) were significant predictors of subjective cognitive complaints. Subjective cognitive complaints were associated with lower adherence to antiretroviral therapy in bivariate analyses, but this relationship was no longer significant after controlling for depression, race, alcohol and drug use. Further research into the relationship between depressive and subjective cognitive complaints may provide additional avenues for intervention.Existe una escasez de investigación sobre la prevalencia de quejas cognitivas subjetivas en personas que viven con el virus de la inmunodeficiencia humana (VIH), junto con los predictores y los resultados relacionados con estas quejas. Evaluamos la demografía, el uso de sustancias y los predictores psiquiátricos, y los resultados relacionados con el VIH asociados con los ítems de quejas cognitivas subjetivas de la Escala de Dificultades Cognitivas. La muestra consistió en 889 personas que viven con el VIH en la cohorte de Florida basada en la encuesta. Los resultados de los modelos de regresión multivariable indicaron que la edad (45-54), el consumo peligroso de alcohol, el uso más frecuente de marihuana y los síntomas psiquiátricos (depresión, ansiedad, trastorno de estrés postraumático) fueron predictores significativos de quejas cognitivas subjetivas. Las quejas cognitivas subjetivas se asociaron con una menor adherencia a la terapia antirretroviral en los análisis bivariados, pero esta relación dejó de ser significativa después de controlar la depresión, la raza, el alcohol y el consumo de drogas. La investigación adicional sobre la relación entre las quejas cognitivas depresivas y subjetivas puede proporcionar vías adicionales de intervención.
- Published
- 2021
- Full Text
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