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Given the association between CD4 cell counts and HIV-related morbidity/mortality, new antiretroviral therapies could potentially lower the direct costs of HIV care by raising CD4 cell counts.To predict the effects of the ritonavir-boosted, HIV protease inhibitor (PI) darunavir on the direct costs of care, while accounting for CD4 cell counts, during the first year of therapy in highly treatment-experienced, HIV-infected adults in different healthcare settings.The mean annual per-patient cost of darunavir/ritonavir (DRV/r) and control PI-based highly active antiretroviral therapy (HAART) was calculated from the proportional use of antiretroviral agents in the DRV/r and control PI arms of the pooled POWER 1 and 2 trials, applying drug-acquisition costs for five healthcare settings. Non-antiretroviral-related costs by CD4 cell count, derived from non-interventional studies in the same settings, were applied to the POWER data (proportion of patients with CD4 cell counts in different strata at week 48) to estimate mean annual non-antiretroviral-related costs per patient in patients receiving DRV/r or control PI-based HAART during year 1.Across all settings, the mean annual per-patient cost of DRV/r-based treatment was 2-19% higher than that of control PI-based therapy during the first year of therapy. By raising CD4 cell counts, however, DRV/r-based regimens were predicted to lower mean annual non-antiretroviral-related costs by 16-38% compared with control PI-based therapy. When combined, the total annual per-patient cost of HIV care during the first year of therapy was estimated to be 7% lower in the DRV/r compared with the control PI arm using US data, 8% lower using Swedish data, budget neutral using UK and Belgian data and 5% higher using Italian data.Darunavir-based HAART may lower non-antiretroviral-related costs compared with control PI-based therapy in highly treatment-experienced, HIV-infected patients during the first year of therapy by improving patients' CD4 cell counts. These costs could partly/fully offset the increased acquisition cost of DRV/r in this patient population over the same period.

Background Effective antiretroviral therapy has increased survival in persons with HIV (PWH). Over 45% of PWH are now over 50 years old, and comorbidities of aging are becoming more prevalent. The objective of this study was to evaluate hospitalization rates and causes for hospitalization among PWH in longitudinal HIV care by age. Methods Hospitalization rates and diagnoses were determined in PWH receiving longitudinal care at 13 sites in the HIV Research Network between 2014 and 2015. Using AHRQ Clinical Classification Software, we divided inpatient ICD9 discharge diagnoses into diagnostic categories. Multivariate negative binomial regression was performed to assess for factors associated with overall hospitalization and for each diagnostic category. Results The sample included 20,608 patients, 73% male, 46% black, 21% Hispanic, 47% MSM, and 12% IDU. Median age was 48 yo [range 18–89] of which 32% were 50–59 yo, 12% were ≥ 60 yo. 75% had CD4 ≥ 350, 81% had HIV-1 RNA < 50 copies. 20% had private insurance, 36% Medicaid, 10% Medicare, and 5% were uninsured. All cause hospitalization rate for 2014–2015 was 201/1000 person-years (PY). Non-AIDS defining infection (non-ADI) was the leading cause for admission (47/1,000 PY), followed by cardiovascular disease (CVD) (22/1,000 PY), psychiatric (14/1,000 PY), endocrine (14/1,000 PY) and ADI (13/1,000 PY). In multivariate analysis, the incidence rate ratio (IRR) for all-cause hospitalization increased by age group (18–29 yo reference): 30–39 yo IRR 1.05 (95% CI 0.88, 1.26), 40–49 yo IRR 1.28 (1.08, 1.51), 50–59 yo IRR 1.43 (1.22, 1.69), and 60 yo or greater IRR 1.97 (1.64, 2.37). Hospitalization rates increased significantly by age group for CV, GU, pulmonary, endocrine, and oncology diagnostic categories. Rates did not differ by age for non-ADI infection, GI and mental health diagnostic categories. Conclusion The hospitalization rates for noncommunicable diseases (NCDs) increase as PWH age. There is an increase CV hospitalizations among older PWH. ADI accounted for fewer hospitalizations than many chronic diseases. Our results suggest that HIV experts, primary care providers and other specialists may need to work together to optimize the care of older PWH. Disclosures A. E. Nijhawan, Gilead: Consultant, Research support.

Background The Ryan White Program (RWP), which provides safety net outpatient healthcare coverage to thousands of low-income persons with HIV (PWH), does not pay for inpatient care. Many PWH who relied on RWP transitioned to either Medicaid or private insurance (private) with the Affordable Care Act in 2014. It is unknown whether such transitions affected hospitalization rates. Methods We included patients from three HIV Research Network sites (two in Medicaid expansion states, one in a nonexpansion state) who relied solely on RWP in 2013. Patients either stayed in RWP through 2015, or changed to Medicaid or private in 2014. 2015 hospitalization rate ratios were modeled using negative binomial regression, adjusting for demographics, CD4 count, HIV viral load (VL), clinic site, and number of 2013 hospitalizations. Results Our sample of 1,634 patients was 73% male, 46% Black, 36% Hispanic; median age was 45 years (IQR 37,52) and median CD4 count 526 cells/μL (356, 716); 85% had a VL ≤400 copies/mL. Ninety-five patients were hospitalized in 2015. Unadjusted hospitalization rates (per 100 person years) were 8.4, 21.3, and 7.4 in 2013 and 6.3, 20.2, and 3.7 in 2015 for those who remained in RWP, switched to Medicaid, or switched to private, respectively. Switching to Medicaid or private was not associated with 2015 hospitalization rates (IRR 1.26 (95% CI 0.71–2.23) and 0.48 (0.18–1.28), table). Older age, CD4 400, and number of 2013 hospitalizations were associated with higher rates. Conclusion Among PWH relying on RWP in 2013, changing to either Medicaid or private insurance was not associated with a change in hospitalization rate. Among PWH, gaining inpatient coverage does not appear to increase inpatient utilization. Incidence Rate Ratios for Hospitalization, 2015 (n = 1634) Characteristic IRR 95% CI Insurance in 2015 RWP – Private 0.48 0.18–1.28 Medicaid 1.26 0.71–2.23 Gender Female – Male or transgender 0.86 0.47–1.58 Race White or other – Black 1.19 0.62–2.27 Hispanic 0.83 0.40–1.72 Age 18–34 – 35–44 0.91 0.45–1.83 45–54 1.51 0.75–3.07 55–64 2.18 1.08–4.41 Risk factor Heterosexual or other – IVDU 1.77 0.68–4.60 MSM 1.68 0.92–3.05 CD4 count

Background: The delivery of HIV healthcare historically has been expensive. The most recent national data regarding HIV healthcare costs were from 1996–1998. We provide updated estimates of expenditures for HIV management. Methods: We performed a cross-sectional review of medical records at 10 sites in the HIV Research Network, a consortium of high-volume HIV care providers across the United States. We assessed inpatient days, outpatient visits, and prescribed antiretroviral and opportunistic illness prophylaxis medications for 14 691 adult HIV-infected patients in primary HIV care in 2006. We estimated total care expenditures, stratified by the median CD4 cell count obtained in 2006 (� 50, 51–200, 201–350, 351–500, >500 cells/ml). Per-unit costs of care were based on Healthcare Cost and Utilization Project (HCUP) data for inpatient care, discounted average wholesale prices for medications, and Medicare physician fees for outpatient care. Results: Averaging over all CD4 strata, the mean annual total expenditures per person for HIV care in 2006 in three sites was US $19 912, with an interquartile range from US $11 045 to 22 626. Average annual per-person expenditures for care were greatest for those with CD4 cell counts 50 cell/ml or less (US $40 678) and lowest for those with CD4 cell counts more than 500 cells/ml (US $16 614). The majority of costs were attributable to medications, except for those with CD4 cell counts 50 cells/ml or less, for whom inpatient costs were highest. Conclusion: HIV healthcare in the United States continues to be expensive, with the majority of expenditures attributable to medications. With improved HIV survival, costs may increase and should be monitored in the future. 2010 Wolters Kluwer Health | Lippincott Williams & Wilkins AIDS 2010, 24:2705–2715

Screening HIV-infected men for gonorrhoea (GC) and chlamydia (CT) may decrease HIV transmission and reduce the incidence of pelvic inflammatory disease in female partners. This study determined GC/CT testing rates in a clinical HIV cohort before and after 2003 when the US Centers for Disease Control and Prevention issued guidelines for GC/CT screening.First GC/CT testing episodes were identified for all men enrolling in a Baltimore HIV clinic from 1999 to 2007. Multivariate Cox and logistic regression were used to assess clinical and demographic factors associated with being tested and with having a positive result.Among 1110 men, the rate of GC/CT testing upon clinic enrollment increased from 4.0% prior to 2003 to 16.5% afterwards, and the rate of ever being tested increased from 34.2% to 49.1% (p0.001 for both comparisons). Among men with same sex contact, 10% of first testing episodes included extragenital sites. Among the 342 men ever-tested, 5.2% had positive results on first testing. Predictors of testing included enrolling after 2003, younger age, frequent visits and black race. Predictors of a positive test result included CD4 count ≥ 200 cells/mm(3) and younger age.GC/CT testing rates among men increased substantially after the 2003 guidelines but remain low. Disseminating existing evidence for GC/CT screening and promoting operational interventions to facilitate it are warranted.

Objectives While highly active antiretroviral therapy (HAART) decreases long-term morbidity and mortality, its short-term effect on hospitalization rates is unknown. The primary objective of this study was to determine hospitalization rates over time in the year after HAART initiation for virological responders and nonresponders. Methods Hospitalizations among 1327 HAART-naive subjects in an urban HIV clinic in 1997–2007 were examined before and after HAART initiation. Hospitalization rates were stratified by virological responders (≥1 log10 decrease in HIV-1 RNA within 6 months after HAART initiation) and nonresponders. Causes were determined through International Classification of Diseases, 9th Revision (ICD-9) codes and chart review. Multivariate negative binomial regression was used to assess factors associated with hospitalization. Results During the first 45 days after HAART initiation, the hospitalization rate of responders was similar to their pre-HAART baseline rate [75.1 vs. 78.8/100 person-years (PY)] and to the hospitalization rate of nonresponders during the first 45 days (79.4/100 PY). The hospitalization rate of responders fell significantly between 45 and 90 days after HAART initiation and reached a plateau at approximately 45/100 PY from 91 to 365 days after HAART initiation. Significant decreases were seen in hospitalizations for opportunistic and nonopportunistic infections. Conclusions The first substantial clinical benefit from HAART may be realized by 90 days after HAART initiation; providers should keep close vigilance at least until this time.

Objective The aim of this study was to examine Emergency Department (ED) utilization and clinical and sociodemographic correlates of ED use among HIV-infected patients.

Background. Most persons with human immunodeficiency virus (HIV) infection in the United States present to care with advanced disease, and many patients discontinue therapy prematurely. We sought to evaluate sex and racial/ethnic disparities in life-years lost as a result of risk behavior, late presentation, and early discontinuation of HIV care, and we compared these survival losses for HIV-infected persons with losses attributable to high-risk behavior and HIV disease itself. Methods. With use of a state-transition model of HIV disease, we simulated cohorts of HIV-infected persons and compared them with uninfected individuals who had similar demographic characteristics. We estimated non‐ HIV-related mortality with use of risk-adjusted standardized mortality ratios, as well as years of life lost because of late presentation and early discontinuation of antiretroviral therapy (ART) for HIV infection. Data from the national HIV Research Network, stratified by sex and race/ethnicity, were used for estimating CD4 + cell counts at ART initiation. Results. For HIV-uninfected persons in the United States who have risk profiles similar to those of individuals with HIV infection, the projected life expectancy, starting at 33 years of age, was 34.58 years, compared with 42.91 years for the general US population. Those with HIV infection lost an additional 11.92 years of life if they received HIV care concordant with guidelines; late treatment initiation resulted in 2.60 additional years of life lost, whereas premature ART discontinuation led to 0.70 more years of life lost. Losses from late initiation and early discontinuation were greatest for Hispanic individuals (3.90 years). Conclusions. The high-risk profile of HIV-infected persons, HIV infection itself, as well as late initiation and early discontinuation of care, all lead to substantial decreases in life expectancy. Survival disparities resulting from late initiation and early discontinuation of therapy are most pronounced for Hispanic HIV-infected men and women. Interventions focused on risk behaviors, as well as on earlier linkage to and better retention in care, will lead to improved survival for HIV-infected persons in the United States.

OBJECTIVES The prevalence of HIV infection in older patients (> or =50 years) is increasing due to HAART, and new HIV infections in older patients. Some earlier studies suggest that older patients respond differently to HAART than younger patients. The objective of this study is to compare the effectiveness of HAART in older and younger HIV patients. DESIGN Retrospective analysis of an observational clinical cohort. METHODS Virologic and immunologic response, progression to AIDS and mortality were compared between 670 younger patients ( or =50 years) by t-test, Kaplan-Meier methods, and multivariate Cox proportional hazards analysis. RESULTS Compared with younger patients, older patients were more likely to be on nonnucleoside reverse transcriptase inhibitors based versus protease inhibitor based regimens (42 vs. 29%, P < 0.01). Time to HIV-1 RNA virologic suppression was less in older than in younger patients (3.2 vs. 4.4 months, P < 0.01). Immunologic response did not differ by age. Older patients had fewer AIDS-defining opportunistic infections (22 vs. 31%, P < 0.01), but higher mortality (36 vs. 27%, P = 0.04) and shorter survival (25th percentile survivor function 36.2 vs. 58.5 months, P = 0.02) than younger patients. Older age was associated with more rapid virologic suppression [adjusted hazard ratio = 1.33 (1.09-1.63)] and earlier mortality [adjusted hazard ratio = 1.56 (1.14-2.14)]. Nonnucleoside reverse transcriptase inhibitors based regimens were associated with more rapid virologic suppression [adjusted hazard ratio = 1.22 (1.03-1.44)]. CONCLUSION Time to virologic suppression after HAART initiation was shorter in older patients, although CD4 response did not differ by age. Older patients had fewer opportunistic infections, but survival was shorter. Our data suggest a need to better understand causes of mortality in older patients.

Public health spans several disciplines dedicated to the improvement of the health and well-being of popula tions across the globe. This mission broadly focuses on prevention of illness, disease, and injury; utilization of appropriate health-care services; and addressing of health-care disparities. The pursuit of social justice underlies this goal. Core disciplines include epidemi ology, environmental health sciences, health policy and management, social and behavioral sciences, and biostatistics. These disciplines draw on a fundamental knowledge of biology, a basic familiarity with social sciences, and an appreciation of socioeconomic and cultural variance among different people. An undergraduate Public Health Studies (PHS) major gives students a unique opportunity to enter into the world of public health. According to a survey by the Association of Schools of Public Health in 2005,113 schools of public health (SPHs) reported that their uni versities offered undergraduate majors. These schools included Johns Hopkins University (JHU), George Washington University (GWU), Loma Linda University (LLU), University of North Carolina at Chapel Hill (UNC-CH), University of California at Berkeley (UC Berkeley), University of Washington (UW), and Tulane University (TU). Three of these universities?GWU, UW, and TU?as well as four other schools?Bos ton University (BU), University of California at Los Angeles (UCLA), University of Southern California (USC), and University of South Florida (USF)?offer minors in undergraduate public health. Six of these schools and an additional 13 universities with SPHs

Substance abuse treatment is associated with decreases in human immunodeficiency virus (HIV) risk behavior and can improve HIV outcomes. The purpose of this study was to examine factors associated with substance abuse treatment utilization, including patient-provider discussions of substance use issues. We surveyed 951 HIV-infected adults receiving care at 14 HIV Research Network primary care sites regarding drug and alcohol use, substance abuse treatment, and provider discussions of substance use issues. Although 71% reported substance use, only 24% reported receiving substance abuse treatment and less than half reported discussing substance use issues with their HIV providers. In adjusted logistic regression models, receipt of substance abuse treatment was associated with patient-provider discussions. Patient-provider discussions of substance use issues were associated with current drug use, hazardous or binge drinking, and Black race or ethnicity, though substance use was comparable between Blacks and Whites. These data suggest potential opportunities for improving engagement in substance abuse treatment services.

Highly active antiretroviral treatment has resulted in dramatically increased life expectancy among patients with HIV infection who are now aging while receiving treatment and are at risk of developing chronic diseases associated with advanced age. Similarities between aging and the courses of human immunodeficiency virus (HIV) infection and acquired immunodeficiency syndrome suggest that HIV infection compresses the aging process, perhaps accelerating comorbidities and frailty. In a workshop organized by the Association of Specialty Professors, the Infectious Diseases Society of America, the HIV Medical Association, the National Institute on Aging, and the National Institute on Allergy and Infectious Diseases, researchers in infectious diseases, geriatrics, immunology, and gerontology met to review what is known about HIV infection and aging, to identify research gaps, and to suggest high priority topics for future research. Answers to the questions posed are likely to help prioritize and balance strategies to slow the progression of HIV infection, to address comorbidities and drug toxicity, and to enhance understanding about both HIV infection and aging.

To describe the risk factors, clinical presentation, and long-term follow up of patients enrolled in a clinical cohort of HIV-infected patients who were diagnosed and treated for neurosyphilis.Comprehensive demographic, clinical, and therapeutic data were collected prospectively on all patients between 1990 and 2006. Patients were diagnosed with neurosyphilis if they had positive syphilis serologies and any of the following: (a) one or more cerebrospinal fluid abnormalities on lumbar puncture [white blood cells10/microl; protein50 mg/dl; reactive venereal diseases research laboratory], (b) an otherwise unexplained neurological finding.Of 231 newly diagnosed syphilis cases, 41 neurosyphilis cases met entry criteria (median age 38.6 years, 79.1% male). Risk factors for neurosyphilis included a CD4 cell count of less than 350 cells/ml at the time of syphilis diagnosis (odds ratio: 2.87; 95% confidence interval: 1.18-7.02), a rapid plasma regain titer1: 128 (2.83; 1.11-7.26), and male sex (2.46; 1.06-5.70). Use of any highly active antiretroviral therapy before syphilis infection reduced the odds of neurosyphilis by 65% (0.35; 0.14-0.91). Sixty-three percent of cases presented with early neurosyphilis and the median time to neurosyphilis diagnosis was 9 months. Symptomatic patients had more cerebrospinal fluid abnormalities on initial lumbar puncture than asymptomatic patients (P = 0.01). Follow-up lumbar puncture within 12 months revealed that only 38% had resolution of all cerebrospinal fluid abnormalities. At 1 year, 38% had persistence of their major symptom despite adequate treatment for neurosyphilis. Twelve of 41 (29%) patients were retreated for syphilis.Early neurosyphilis was common in this cohort. Highly active antiretroviral therapy to reverse immunosuppression may help mitigate neurological complications of syphilis.

Objective Among HIV-infected individuals, we examined whether having co-occurring serious mental illness (SMI) and injection drug use (IDU) impacts: (a) receipt of highly active antiretroviral therapy (HAART), and (b) utilization of inpatient HIV services, compared to those who have SMI only, IDU only or neither SMI nor IDU. Method Demographic, clinical and resource utilization data were collected from medical records of 5119 patients in HIV primary care at four US HIV care sites in different geographic regions with on-site mental health services in 2001. We analyzed receipt of HAART using multivariate logistic regression and the number of medical hospital admissions using multivariate logistic and Poisson regression analyses, which controlled for demographic factors, receipt of HAART, CD4 count and HIV-1 RNA. Results Those with co-occurring SMI and IDU [adjusted odds ratio (AOR)=0.52; 95% confidence interval (95% CI)=0.41–0.81] and those with IDU alone (AOR=0.64; 95% CI=0.58–0.85) were significantly less likely to receive HAART than those with neither SMI nor IDU, controlling for demographic and clinical factors. Those with co-occurring SMI and IDU were more likely to use any inpatient medical services (AOR=2.22; 95% CI=1.64–3.01) and were significantly more likely to use them more frequently (incidence rate ratio=1.33; 95% CI=1.13–1.55) than those with neither SMI nor IDU, SMI only or IDU only. Conclusion HIV-infected individuals with co-occurring SMI and IDU are significantly more likely to utilize HIV-related medical inpatient services than individuals with no comorbidity or with only one comorbidity. Individuals with both SMI and IDU did not differ from those with IDU only in receipt of HAART. Inpatient hospitalizations are expensive, and efforts should be targeted towards these populations to reduce potentially avoidable inpatient care.

In the first decade of the HIV epidemic, efforts were made to develop community-based systems of care, in part to reduce the frequency and cost of inpatient treatment (Mor et al. 1994). These efforts culminated in 1990 with the passage of the Ryan White CARE Act, which provides funds to support and enhance community-based care for HIV disease (Bowen et al. 1992). One premise of such programs is that appropriate outpatient care could reduce the incidence of costly inpatient episodes. Closer outpatient disease management could potentially avoid hospitalization by discovering and treating incipient conditions. If this is correct, one would expect to find a negative relationship between outpatient and inpatient utilization. Alternatively, sicker patients might consume higher levels of both inpatient and outpatient care, leading to a positive relationship between inpatient and outpatient utilization. Relatively few studies of persons with HIV have investigated the association between inpatient and outpatient service use. Most research examines inpatient and outpatient use in separate analyses (e.g., Shapiro et al. 1999; Fleishman et al. 2005). Cunningham et al. (1996) reported a positive association between number of ambulatory visits and the probability of having had a prior hospitalization. However, the sample was recruited from patients hospitalized for HIV-related conditions, raising the potential for selection bias. Pezzin and Fleishman (2003) developed a complex econometric model to examine the effect of number of ambulatory visits on inpatient and emergency department use. Overall, the association between number of ambulatory visits and number of inpatient episodes was not significant. These studies were based on data collected before the introduction of highly active antiretroviral therapy (HAART) in 1996. It is not clear if similar relationships would be obtained in the current treatment environment. The introduction of HAART was associated with substantial declines in inpatient censuses of patients with HIV (Torres and Barr 1997; Fleishman and Hellinger 2001; Gebo, Diener-West, and Moore 2001; Paul et al. 2002). Despite the reductions, HIV-related inpatient utilization is still far from rare; among 15,211 HIV-infected patients from several care sites in 2001, 20.4 percent had one or more inpatient episodes (Fleishman et al. 2005). Inpatient care remains a major component of overall expenses for treating HIV infection (Gebo et al. 2006). This study examines the association between ambulatory visits and inpatient admissions, using data from 2001 to 2004 in a large sample of HIV patients in care. We examine whether ambulatory care helps to prevent subsequent inpatient care (i.e., a negative relationship) or whether outpatient and inpatient care are complementary (i.e., a positive relationship). If both processes are at work, the relationship could be nonlinear.

Stephen J Gange, Mari M Kitahata, Michael S Saag, David R Bangsberg, Ronald J Bosch, John T Brooks, Liviana Calzavara, Steven G Deeks, Joseph J Eron, Kelly A Gebo, M John Gill, David W Haas, Robert S Hogg, Michael A Horberg, Lisa P Jacobson, Amy C Justice, Gregory D Kirk, Marina B Klein, Jeffrey N Martin, Rosemary G McKaig, Benigno Rodriguez, Sean B Rourke, Timothy R Sterling, Aimee M Freeman and Richard D Moorey*

Hepatitis B virus (HBV) and hepatitis C virus (HCV) coinfection are increasingly important sources of morbidity among HIV-infected persons. We determined associations between hepatitis coinfection and healthcare utilization among HIV-infected adults at 4 US sites during 2006-2011. Outpatient HIV visits did not differ by hepatitis serostatus and decreased over time. Mental health visits were more common among HIV/HCV coinfected persons than among HIV monoinfected persons [incidence rate ratio (IRR): 1.27, 95% confidence interval (CI): 1.08 to 1.50]. Hospitalization rates were higher among all hepatitis-infected groups than among HIV monoinfected (HIV/HBV: IRR: 1.23, 95% CI: 1.05 to 1.44; HIV/HCV: IRR: 1.22, 95% CI: 1.10 to 1.36; HIV/HBV/HCV: IRR: 1.31, 95% CI: 1.02 to 1.68). These findings may inform the design of clinical services and allocation of resources.

Background Retention in care is important for all HIV-infected persons and is strongly associated with initiation of antiretroviral therapy and viral suppression. However, it is unclear how retention in care and age interact to affect viral suppression. We evaluated whether the association between retention and viral suppression differed by age at entry into care. Methods Cross-sectional analysis (2006-2010) involving 17,044 HIV-infected adults in 14 clinical cohorts across the United States and Canada. Patients contributed 1 year of data during their first full-calendar year of clinical observation. Poisson regression examined associations between retention measures [US National HIV/AIDS Strategy (NHAS), US Department of Health and Human Services (DHHS), 6-month gap, and 3-month visit constancy] and viral suppression (HIV RNA ≤200 copies/mL) by age group: 18-29 years, 30-39 years, 40-49 years, 50-59 years, and 60 years or older. Results Overall, 89% of patients were retained in care using the NHAS measure, 74% with the DHHS indicator, 85% did not have a 6-month gap, and 62% had visits in 3-4 quarters of the year; 54% achieved viral suppression. For each retention measure, the association with viral suppression was significant for only the younger age groups (18-29 and 30-39 years): 18-29 years [adjusted prevalence ratio (APR) = 1.33, 95% confidence interval (CI): 1.03 to 1.70]; 30-39 years (APR = 1.23, 95% CI: 1.01 to 1.49); 40-49 years (APR = 1.06, 95% CI: 0.90 to 1.22); 50-59 (APR = 0.92, 95% CI: 0.75 to 1.13); ≥60 years (APR = 0.99, 95% CI: 0.63 to 1.56) using the NHAS measure as a representative example. Conclusions These results have important implications for improving viral control among younger adults, emphasizing the crucial role retention in care plays in supporting viral suppression in this population.

In the United States, 21 years is a critical age of legal and social transition, with changes in social programs such as public insurance coverage. Human immunodeficiency virus (HIV)-infected youth have lower adherence to care and medications and may be at risk of loss to follow-up (LTFU) at this benchmark age. We evaluated LTFU after the 22nd birthday for HIV-infected youth engaged in care. LTFU was defined as having no primary HIV visits in the year after the 22nd birthday.All HIV-infected 21-year-olds engaged in care (2002-2011) at the HIV Research Network clinics were included. We assessed the proportion LTFU and used multivariable logistic regression to evaluate demographic and clinical characteristics associated with LTFU after the 22nd birthday. We compared LTFU at other age transitions during the adolescent/young adult years.Six hundred forty-seven 21-year-olds were engaged in care; 91 (19.8%) were LTFU in the year after turning 22 years. Receiving care at an adult versus pediatric HIV clinic (adjusted odds ratio [AOR], 2.91; 95% confidence interval [CI], 1.42-5.93), having fewer than four primary HIV visits/year (AOR, 2.72; 95% CI, 1.67-4.42), and antiretroviral therapy prescription (AOR, .50; 95% CI, .41-.60) were independently associated with LTFU. LTFU was prevalent at each age transition, with factors associated with LTFU similar to that identified for 21-year-olds.Although 19.8% of 21-year-olds at the HIV Research Network sites were LTFU after their 22nd birthday, significant proportions of youth of all ages were LTFU. Fewer than four primary HIV care visits/year, receiving care at adult clinics and not prescribed antiretroviral therapy, were associated with LTFU and may inform targeted interventions to reduce LTFU for these vulnerable patients.

Enhanced HIV prevention interventions, such as preexposure prophylaxis for high-risk individuals, require substantial investments. We sought to estimate the medical cost saved by averting 1 HIV infection in the United States.We estimated lifetime medical costs in persons with and without HIV to determine the cost saved by preventing 1 HIV infection. We used a computer simulation model of HIV disease and treatment (CEPAC) to project CD4 cell count, antiretroviral treatment status, and mortality after HIV infection. Annual medical cost estimates for HIV-infected persons, adjusted for age, sex, race/ethnicity, and transmission risk group, were from the HIV Research Network (range, $1854-$4545/mo) and for HIV-uninfected persons were from the Medical Expenditure Panel Survey (range, $73-$628/mo). Results are reported as lifetime medical costs from the US health system perspective discounted at 3% (2012 USD).The estimated discounted lifetime cost for persons who become HIV infected at age 35 is $326,500 (60% for antiretroviral medications, 15% for other medications, 25% nondrug costs). For individuals who remain uninfected but at high risk for infection, the discounted lifetime cost estimate is $96,700. The medical cost saved by avoiding 1 HIV infection is $229,800. The cost saved would reach $338,400 if all HIV-infected individuals presented early and remained in care. Cost savings are higher taking into account secondary infections avoided and lower if HIV infections are temporarily delayed rather than permanently avoided.The economic value of HIV prevention in the United States is substantial given the high cost of HIV disease treatment.

Given the increased prevalence of HIV infection in older individuals, we evaluated the adequacy of HIV-specific health maintenance, age-appropriate cancer screening, and diabetes management in an urban HIV clinic. We randomly selected 222 HIV-positive patients 40 years or older followed at the Johns Hopkins University Moore Clinic between 1999 and 2002. Demographic, clinical, and pharmaceutical data were abstracted from clinic charts. Outcomes of interest were vaccinations, annual rapid plasmin reagin (RPR) testing, and Papanicoloau smears and mammography in women. Logistic regression analyses were performed to identify variables significantly associated with being up to date on vaccinations. The sample was 56% female and 82% African American with a mean age of 50.9 years. Sixty-five percent used tobacco, 10% used alcohol, and 13% used illicit drugs daily. At the time of evaluation, 87% had received the pneumococcal vaccine. Of nonimmune patients, 66% were vaccinated for hepatitis B and 28% for hepatitis A. Eighty-two percent of women were referred for Papanicoloau smears and 56% for mammography. Only 59% completed the Papanicoloau smear, and 31% had mammography. Forty-two percent of patients with diabetes underwent quarterly foot examinations, and 33% had microalbuminuria screening. Risk factors for missed vaccinations include prior AIDS diagnosis (odds ratio [OR] 1.82, 95% confidence interval [CI] 1.55, 3.13), CD4+ cell count less than 50 cells/mm(3) at the time of visit (OR 6.31, 95% CI 1.74, 22.9), and a history of chronic obstructive pulmonary disease (COPD) or asthma (OR 2.54, 95% CI 1.03, 6.28). In summary, HIV-positive patients are more likely to receive HIV-specific primary care interventions, especially vaccinations that can be given in clinic, than routine health maintenance screening that required referral and evaluation elsewhere. This suggests that if health maintenance screening can be delivered in the same clinic, usage rates are likely to increase.

To investigate the association between the introduction of HAART and invasive pneumococcal disease (IPD) in HIV-infected patients.Incidence of IPD was determined from 1990 to 2003 in a cohort of HIV-infected individuals and a nested case-control study assessed risk factors of IPD.There were 72 cases over 19,020 person-years of follow-up (overall IPD rate, 379/100,000 person-years). In the calendar periods 1990-1995, 1995-1998, and 1998-2003, the IPD incidence per 100,000 person-years was 279 [95% confidence interval (CI), 150-519], 377 (95% CI, 227-625) and 410 (95% CI, 308-545), respectively (P = 0.516). CD4 cell count200 cells/microl [odds ratio (OR), 3.0; 95% CI, 1.2-7.6), HIV RNA50,000 copies/ml (OR, 2.8; 95% CI, 1.2-6.5), hepatitis C (OR, 4.9; 95% CI, 1.7-14.9), serum albumin (OR, 0.1; 95% CI, 0.04-0.5), injection drug use in women (OR, 3.8; 95% CI, 1.6-8.8), and education beyond high school (OR, 0.2; 95% CI, 0.05-0.8) were significantly associated with IPD in multivariate analysis. No treatment factor, including HAART (OR, 0.7; 95% CI, 0.3-1.5) and pneumococcal vaccination (OR, 0.9; 95% CI, 0.5-1.6), was associated with IPD.IPD incidence did not change significantly during the widespread dissemination of HAART in this cohort. IPD risk was associated with several sociodemographic and clinical factors.

The prevalence of HIV infection in middle aged and older populations is increasing. Highly active antiretroviral therapy has revolutionized HIV care; however, older patients may have less clinical benefit and worse toxicity from this form of therapy than younger patients. Older patients are more likely to have other comorbidities, treatment of which may complicate HIV management. General routine medical care and social issues are essential components of HIV care that should not be forgotten in the care of older HIV patients. Management of HIV in middle aged and older patients has become more complex in the current highly active antiretroviral therapy era.

Background: National data from the mid-1990s demonstrated that many eligible patients did not receive highly active antiretroviral therapy (HAART) and that racial and gender disparities existed in HAART receipt. We examined whether demographic disparities in the use of HAART persist in 2001 and if outpatient care is associated with HAART utilization. Methods: Demographic, clinical, and pharmacy utilization data were collected from 10 US HIV primary care sites in the HIV Research Network (HIVRN). Using multivariate logistic regression, we examined demographic and clinical differences associated with receipt of HAART and the association of outpatient utilization with HAART. Results: In our cohort in 2001, 84% of patients received HAART and 66% had 4 or more outpatient visits during calendar year (CY) 2001. Of those with 2 or more CD4 counts below 350 cells/mm 3 in 2001, 91% received HAART; 82% of those with 1 CD4 test result below 350 cells/mm 3 received HAART; and 77% of those with no CD4 counts below 350 cells/mm 3 received HAART. Adjusting for care site in multivariate analyses, age >40 years (adjusted odds ratio [AOR] = 1.13), male gender (AOR = 1.23), Medicaid coverage (AOR = 1.16), Medicare coverage (AOR = 1.73), having 1 or more CD4 counts less than 350 cells/mm 3 (AOR = 1.33), and having 4 or more outpatient visits in a year (OR = 1.34) were significantly associated with an increased likelihood of HAART. African Americans (odds ratio [OR] = 0.84) and those with an injection drug use risk factor (OR = 0.86) were less likely to receive HAART. Conclusions: Although the overall prevalence of HAART has increased since the mid-1990s, demographic disparities in HAART receipt persist. Our results support attempts to increase access to care and frequency of outpatient visits for underutilizing groups as well as increased efforts to reduce persistent disparities in women, African Americans, and injection drug users (IDUs).

To examine the epidemiology, treatment patterns, and costs of cytomegalovirus (CMV) retinitis treatment in the post-HAART (highly active antiretroviral therapy) era, a retrospective cohort study was performed using data from US managed-care plans from 1997-2002. Cases with CMV retinitis were defined by requiring diagnosis codes for HIV (or AIDS), CMV, and retinitis and claims for anti-CMV treatment. Costs of oral, intravenous, and intraocular treatment periods were examined. The incidence of enrolled HIV or AIDS cases increased from 7 per million members in 1997 to 150 per million members in 2001. The incidence of CMV retinitis decreased from 23 per 10,000 HIV or AIDS cases in 1997 to 8 per 10,000 HIV or AIDS cases in 2001. The average duration of a CMV episode was 192 days and the average cost was 19,576 US dollars. In a multiple linear regression model adjusting for age, gender, insurance type, geographic region, HAART use, and co-existing AIDS-defining illnesses, intraocular and oral treatment periods saved 7135 and US dollars and 6866 US dollars, respectively, per treatment period compared with intravenous treatment (P < 0.05). The incidence of CMV retinitis decreased in this managed-care population during the post-HAART era. Use of oral or intraocular treatment saves costs compared with intravenous treatment in a managed-care environment.

Current guidelines recommend consideration of CD4 cell percentage as well as CD4 cell count in therapeutic decisions. The relative value of CD4 cell count compared with CD4 cell percentage in predicting risk of AIDS-defining illnesses (ADIs) in the post-HAART (highly active antiretroviral therapy) era is unknown. Data from an observational clinical cohort of adult HIV-infected patients were used to assess the risk of developing an ADI associated with specific absolute CD4 counts (CD4) and CD4%'s (CD4%) using all CD4-CD4% pairs obtained after January 1996. The incidence of developing an ADI was assessed over a maximum of 6 months after the CD4-CD4% pair was obtained. Using multivariable negative binomial regression, the incidence rate ratio (IRR) for developing an ADI by CD4 and CD4% categories was computed. A total of 15,736 CD4-CD4% pairs from 2185 patients who developed 608 ADIs was analyzed. The IRR for developing an ADI by absolute CD4 was 17.9 (95% CI: 13.2, 24.4) events/100 person-years for50 cells/mm, 6.2 (95% CI: 4.4, 7.9) for 50-100 cells/mm, and 2.7 (95% CI: 1.9, 4.0) for 100-200 cells/mm, compared with the referent stratum of 200-350 cells/mm. Without adjustment for absolute CD4, the IRR was 14.4 (95% CI: 9.3,22.6) for CD4%7%, 3.7 (95% CI: 2.4,5.9) for 7-14%, 1.9 (95% CI: 1.1, 3.1) for 15-21%, compared with the referent stratum of21%. However, in a multivariable analysis adjusting for absolute CD4, CD4%, and other clinical and demographic variables, the absolute CD4 but not the CD4% was associated strongly with developing an ADI. The results suggest that CD4% adds little further predictive information after accounting for the absolute CD4 count for the short-term risk of developing an ADI. The absolute CD4 count is the more important measure of immune status and is preferred over the CD4% for making treatment decisions in HIV-infected adults.

To assess the roles of socioeconomic status, social stability, social stress, health beliefs, and illicit drug use with nonadherence to antiretroviral therapy.Cross-sectional study.Urban hospital clinic.One hundred ninety-six consecutive HIV-infected patients taking at least 1 antiretroviral medication, awaiting a visit with their primary care provider.Patients were interviewed while waiting for a clinic appointment and were asked to fill out a 4-part survey with questions regarding antiretroviral adherence, illicit drug use, health beliefs, and social situation. Adherence was defined as the percentage of doses taken, i.e., the number of doses taken divided by the number of doses prescribed over a 2-week interval. Univariate and multivariate logistic regressions were performed to identify factors associated with nonadherence in different patient subgroups.Nonadherence to antiretroviral therapy was associated with active illicit drug use (adjusted odds ratio [AOR], 2.31; 95% confidence interval [95% CI], 1.17 to 4.58), eating fewer than 2 meals per day (AOR, 3.31; 95% CI, 1.11 to 9.92), and feeling as though pressures outside of the clinic affected patient's ability to take antiretroviral medications as prescribed (AOR, 2.22; 95% CI, 0.99 to 4.97). In patients with a history of injection drug use, nonadherence to antiretroviral therapy was independently associated with eating fewer than 2 meals per day (AOR, 17.54; 95% CI, 1.92 to 160.4) and active illicit drug use (AOR, 4.18; 95% CI, 1.68 to 10.75). In patients without any injection drug use, nonadherence was only associated with feeling as though pressures outside of clinic affected patient's ability to take antiretroviral medications as prescribed (AOR, 3.55; 95% CI, 1.07 to 11.76). Male-to-male sexual contact was associated with lower nonadherence in patients with an HIV risk factor other than injection drug use (AOR, 0.35; 95% CI, 0.13 to 0.95). A history of drug use but no illicit drug use within 6 months of the interview was not associated with an increased rate of nonadherence.Although our sample size was limited and variables that are not significant in subgroup analysis may still be associated with adherence, our results suggest that correlates of nonadherence are HIV risk factor specific. Strategies to increase antiretroviral adherence in HIV-infected patients should include social support interventions targeted at different risk factors for different patient groups.

This systematic review addresses 2 questions pertinent to the need for pretreatment liver biopsy in patients with chronic hepatitis C: how well do liver biopsy results predict treatment outcomes for chronic hepatitis C? How well do biochemical blood tests and serologic measures of fibrosis predict the biopsy findings in chronic hepatitis C? Medline and other electronic databases were searched from January 1985 to March 2002. Additional articles were sought in references of pertinent articles and recent journals and by querying experts. Articles were eligible for review if they reported original human data from a study that used virological, histological, pathologic, or clinical outcome measures. Paired reviewers assessed the quality of each eligible study and abstracted data. Studies suggested that advanced fibrosis or cirrhosis on initial liver biopsy is associated with a modestly decreased likelihood of a sustained virological response (SVR) to treatment. Also, studies relatively consistently showed that serum aminotransferases have modest value in predicting fibrosis on biopsy; that extracellular matrix tests hyaluronic acid and laminin may have value in predicting fibrosis, and that panels of tests may have the greatest value in predicting fibrosis or cirrhosis. Biochemical and serologic tests were best at predicting no or minimal fibrosis, or at predicting advanced fibrosis/cirrhosis, and were poor at predicting intermediate levels of fibrosis. Thus, evidence suggests that liver biopsy may have some usefulness in predicting efficacy of treatment in patients with chronic hepatitis C, and biochemical blood tests and serologic tests currently have only modest value in predicting fibrosis on liver biopsy.

This systematic review addressed 3 issues regarding current treatments for chronic hepatitis C: (1) efficacy and safety in treatment-naive patients; (2) efficacy and safety in selected subgroups of patients; and (3) effects on long-term clinical outcomes. Electronic databases were searched for articles from January 1996 to March 2002. Additional articles were identified by searching references in pertinent articles and recent journals and by questioning experts. Articles were eligible for review if they reported original human data from a study that used virological, histological, or clinical outcome measures. For data collection, paired reviewers assessed the quality of each study and abstracted data. This systematic review found that the combination of high-dose peginterferon and ribavirin was more efficacious than standard interferon and ribavirin in persons infected with hepatitis C virus (HCV) genotype 1 (sustained virologic response [SVR] rate: 42% vs. 33%) and that ranges of SVR rates were higher with peginterferon than standard interferon monotherapy in naive patients (10% to 39% vs. 3% to 19%). Reports were consistent in showing treatment with interferon and ribavirin was more efficacious than interferon monotherapy in treatment-naive persons and previous nonresponders and relapsers. Studies were moderately consistent in showing that treatment decreases the risk for hepatocellular carcinoma (HCC). The evidence on treatment in important subgroups was limited by a lack of randomized controlled trials. Thus, the combination of peginterferon and ribavirin was the most efficacious treatment in patients with HCV genotype 1. Long-term outcomes were improved in patients with hepatitis C who achieved an SVR with treatment.

This systematic review addresses the following questions: (1) What is the efficacy of using screening tests for hepatocellular carcinoma (HCC) in improving outcomes in chronic hepatitis C, and (2) what are the sensitivity and specificity of screening tests for HCC in chronic hepatitis C? The search strategy involved searching Medline and other electronic databases between January 1985 and March 2002. Additional articles were identified by reviewing pertinent articles and journals and by querying experts. Articles were eligible for review if they reported original human data from studies of screening tests that used virological, histological, pathologic, or clinical outcome measures. Data collection involved paired reviewers who assessed the quality of each study and abstracted data. One nonrandomized prospective cohort study suggested that HCC was detected earlier and was more often resectable in patients who had twice yearly screening with serum alpha-fetoprotein (AFP) and hepatic ultrasound than in patients who had usual care. Twenty-four studies, which included patients with chronic hepatitis C or B or both, addressed the sensitivities and specificities of screening tests. They were relatively consistent in showing that the sensitivity of serum AFP for detecting HCC usually was moderately high at 45% to 100%, with a specificity of 70% to 95%, for a threshold of between 10 and 19 ng/mL. The few studies that evaluated screening with ultrasound reported high specificity, but variable sensitivity. In conclusion, screening of patients with chronic hepatitis C with AFP and ultrasound may improve detection of HCC, but studies are needed to determine whether screening improves clinical outcomes.

Objective: To assess the temporal association of changes in substance abuse with antiretroviral therapy use and adherence, HIV-1 RNA suppression, and CD4 cell count changes in patients attending an urban clinic. Design: Prospective cohort study. Methods: Six-hundred and ninety-five HIV-1-infected individuals, who completed two or more semi-annual standardized surveys and in whom antiretroviral therapy was indicated, were included in the analysis. Surveys addressed antiretroviral therapy use and adherence, and use of illicit drugs and alcohol. Substance abuse was defined as active heroin, cocaine, or heavy alcohol use in the 6 months preceding survey. The units of analysis were consecutive pairs of surveys (couplets) in individual participants. Couplets in which participants denied substance abuse in both surveys were compared to couplets in which participants switched from non-use to substance abuse, and couplets in which participants reported substance abuse in both surveys were compared to couplets where participants switched from substance abuse to non-use. Results: Switching from non-use to substance abuse was strongly associated with worsening antiretroviral therapy use and adherence, less frequent HIV-1 RNA suppression, and blunted CD4 cell increases, compared to remaining free of substance abuse. Alternatively, switching from substance abuse to non-use was strongly associated with improvements in antiretroviral therapy use and adherence, and HIV-1 treatment outcomes, compared to persisting with substance abuse. Conclusions: This longitudinal study highlights the dynamic nature of substance abuse and its temporal association with the effectiveness of HIV-1 treatment in patients attending an inner-city clinic.

Background Youth have residual thymic tissue and potentially greater capacity for immune reconstitution than adults after initiation of combination antiretroviral therapy (cART). However, youth face behavioral and psychosocial challenges that may make them more likely than adults to delay ART initiation and less likely to attain similar CD4 outcomes after initiating cART. This study compared CD4 outcomes over time following cART initiation between ART-naive non-perinatally HIV-infected (nPHIV) youth (13–24 years-old) and adults (≥25–44 years-old). Methods Retrospective analysis of ART-naive nPHIV individuals 13–44 years-old, who initiated their first cART between 2008 and 2011 at clinical sites in the HIV Research Network. A linear mixed model was used to assess the association between CD4 levels after cART initiation and age (13–24, 25–34, 35–44 years), accounting for random variation within participants and between sites, and adjusting for key variables including gender, race/ethnicity, viral load, gaps in care (defined as > 365 days between CD4 tests), and CD4 levels prior to cART initiation (baseline CD4). Results Among 2,595 individuals (435 youth; 2,160 adults), the median follow-up after cART initiation was 179 weeks (IQR 92–249). Baseline CD4 was higher for youth (320 cells/mm3) than for ages 25–34 (293) or 35–44 (258). At 239 weeks after cART initiation, median unadjusted CD4 was higher for youth than adults (576 vs. 539 and 476 cells/mm3, respectively), but this difference was not significant when baseline CD4 was controlled. Compared to those with baseline CD4 ≤200 cells/mm3, individuals with baseline CD4 of 201–500 and >500 cells/mm3 had greater predicted CD4 levels: 390, 607, and 831, respectively. Additionally, having no gaps in care and higher viral load were associated with better CD4 outcomes. Conclusions Despite having residual thymic tissue, youth attain similar, not superior, CD4 gains as adults. Early ART initiation with minimal delay is as essential to optimizing outcomes for youth as it is for their adult counterparts.

Background. Elite controllers spontaneously suppress human immunodeficiency virus (HIV) viremia but also demonstrate chronic inflammation that may increase risk of comorbid conditions. We compared hospitalization rates and causes among elite controllers to those of immunologically intact persons with medically controlled HIV. Methods. For adults in care at 11 sites from 2005 to 2011, person-years with CD4 T-cell counts ≥350 cells/mm 2 were categorized as medical control, elite control, low viremia, or high viremia. All-cause and diagnostic categoryspecific hospitalization rates were compared between groups using negative binomial regression. Results. We identified 149 elite controllers (0.4%) among 34 354 persons in care. Unadjusted hospitalization rates among the medical control, elite control, low-viremia, and high-viremia groups were 10.5, 23.3, 12.6, and 16.9 per 100 person-years, respectively. After adjustment for demographic and clinical factors, elite control was associated with higher rates of all-cause (adjusted incidence rate ratio, 1.77 [95% confidence interval, 1.21–2.60]), cardiovascular (3.19 [1.50–6.79]) and psychiatric (3.98 [1.54–10.28]) hospitalization than was medical control. Non– AIDS-defining infections were the most common reason for admission overall (24.1% of hospitalizations) but were rare among elite controllers (2.7%), in whom cardiovascular hospitalizations were most common (31.1%). Conclusions. Elite controllers are hospitalized more frequently than persons with medically controlled HIV and cardiovascular hospitalizations are an important contributor.

Objectives Guidelines recommend hepatitis C virus (HCV) screening for all people living with HIV (PLWH). Understanding HCV testing practices may improve compliance with guidelines and can help identify areas for future intervention. Methods We evaluated HCV screening and unnecessary repeat HCV testing in 8,590 PLWH initiating care at 12 U.S. HIV clinics between 2006 and 2010, with follow-up through 2011. Multivariable logistic regression examined the association between patient factors and the outcomes: HCV screening (≥1 HCV antibody tests during the study period) and unnecessary repeat HCV testing (≥1 HCV antibody tests in patients with a prior positive test result). Results Overall, 82% of patients were screened for HCV, 18% of those screened were HCV antibody-positive, and 40% of HCV antibody-positive patients had unnecessary repeat HCV testing. The likelihood of being screened for HCV increased as the number of outpatient visits rose (adjusted odds ratio 1.02, 95% confidence interval 1.01–1.03). Compared to men who have sex with men (MSM), patients with injection drug use (IDU) were less likely to be screened for HCV (0.63, 0.52–0.78); while individuals with Medicaid were more likely to be screened than those with private insurance (1.30, 1.04–1.62). Patients with heterosexual (1.78, 1.20–2.65) and IDU (1.58, 1.06–2.34) risk compared to MSM, and those with higher numbers of outpatient (1.03, 1.01–1.04) and inpatient (1.09, 1.01–1.19) visits were at greatest risk of unnecessary HCV testing. Conclusions Additional efforts to improve compliance with HCV testing guidelines are needed. Leveraging health information technology may increase HCV screening and reduce unnecessary testing.

OBJECTIVE We sought to quantify agreement between Institute of Medicine (IOM) and Department of Health and Human Services (DHHS) retention indicators, which have not been compared in the same population, and assess clinical retention within the largest HIV cohort collaboration in the U.S. DESIGN Observational study from 2008-2010, using clinical cohort data in the North American AIDS Cohort Collaboration on Research and Design (NA-ACCORD). METHODS Retention definitions used HIV primary care visits. The IOM retention indicator was: ≥2 visits, ≥90 days apart, each calendar year. This was extended to a 2-year period; retention required meeting the definition in both years. The DHHS retention indicator was: ≥1 visit each semester over 2 years, each ≥60 days apart. Kappa statistics detected agreement between indicators and C statistics (areas under Receiver-Operating Characteristic curves) from logistic regression analyses summarized discrimination of the IOM indicator by the DHHS indicator. RESULTS Among 36,769 patients in 2008-2009 and 34,017 in 2009-2010, there were higher percentages of participants retained in care under the IOM indicator than the DHHS indicator (80% vs. 75% in 2008-2009; 78% vs. 72% in 2009-2010, respectively) (p

During 2001-2010, declines in all-cause and AIDS defining illness (ADI) hospitalizations were seen among adults living with HIV.1, 2 These trends likely relate to improved viral suppression and immune function resulting from a combination of treatment initiation at higher CD4 counts, earlier diagnosis and linkage to care, and more potent and tolerable antiretroviral therapy (ART) regimens.3, 4 It is not known whether perinatally HIV-infected (PHIV) individuals; most of whom are young children (ages 0-4 years), school-age children (ages 5-16), or young adults (ages 17-24); have had similar declines in hospitalizations. Like non-PHIV adults, PHIV individuals have had improvements in virologic suppression over the past decade.5, 6 Compared to their younger counterparts, PHIV young adults may have particular risk for hospitalization. PHIV young adults were born prior to the advent of combination ART in 1996. They may have suffered advanced immunosuppression from the absence of effective treatment. Antiretroviral resistance acquired from exposure to sub-optimal regimens7-9 may have limited subsequent ART options to more complicated and toxic regimens. Unrelated to HIV, young adults face challenges to adherence in the context of independence from guardians, peer pressure, and low perception of risk.10 Among PHIV patients, there is reason to fear increasing renal and cardiovascular morbidity from antiretroviral toxicity and/or from HIV itself. Antiretroviral agents have been associated with renal and cardiovascular laboratory and imaging abnormalities among PHIV patients.11-15 The objective of this study was to describe trends in all cause hospitalization rates and causes among PHIV patients receiving care at pediatric HIV specialty clinics during 2003-2010. Understanding these trends is important to assessing current clinical care and to identifying opportunities for improvement.

In the USA, Medicaid is the principal payer of the health care costs of patients with HIV infection. We wished to determine how the costs to Medicaid of patients in Maryland infected with HIV have changed in the setting of highly active antiretroviral treatment.Observational cohort study.Analysis of combined economic and clinical data of patients from the Johns Hopkins HIV Service, the provider of primary and sub-specialty care for a majority of HIV-infected patients in the Baltimore metropolitan region. All patients were enrolled in Medicaid and received care longitudinally in Maryland from 1 January 1995 through 31 December 1997. Monthly Medicaid payments were calculated for all inpatient and outpatient services by fiscal year, CD4 cell count, and use of protease inhibitors.For inpatients with a CD4 cell countor = 50 x 10(6) cells/l, the total health care average monthly payments remained unchanged ($2629 in 1995, $2585 in 1997). Total mean monthly payments increased for those with a CD4 cell count50 x 10(6) cells/l (CD4 cell count 50-200 x 10(6) cells/l, $1172 in 1995 and $1615 in 1997, P0.05; CD4 cell count 201-500 x 10(6) cells/l, $1078 in 1995 and $1305 in 1997, P0.05). However, when data were stratified according to use of a protease inhibitor-containing regimen (used during approximately 50% of follow-up time in 1996-1997) it was found that hospital inpatient payments decreased significantly in all CD4 strata for patients on a protease inhibitor-containing regimen whereas pharmacy payments increased significantly. Inpatient payments associated with treating opportunistic illness were lower in 1996-1997 for patients receiving protease inhibitor therapy compared with those not receiving protease inhibitors. On balance, total health care payments tended to be slightly lower for patients receiving a protease inhibitor regimen.Although protease inhibitor-containing antiretroviral regimens are being used by only about half of our Medicaid-insured patients, when they are used, there are significantly lower hospital inpatient and community care costs, as well as lower costs associated with the treatment of opportunistic illness. Even with the concurrent increase in their pharmacy costs, total health care costs were stable or slightly lower for these patients. We believe this is a favorable result suggesting a good clinical value being achieved without an increase in costs.

Retention in care is important for all HIV-infected patients, but may be more important for people with advanced HIV disease. We evaluated whether the association between retention in care and viral suppression differed by HIV disease severity.A repeated cross-sectional analysis (2006-2011) involving 35,433 adults at 18 US HIV clinics. Multivariable logistic regression models examined associations between retention measures [Health Resources and Services Administration (HRSA) retention measure, 6-month gap, and 3-month visit constancy] and viral suppression (HIV-1 RNA ≤ 400 copies/mL) for HIV disease severity groups defined by CD4 counts: ≤ 200, 201-350, 351-500, and500 cells per cubic millimeter.Overall, patients met the HRSA measure in 84% of person-years, did not have a 6-month gap in 76%, and had visits in all 4 quarters in 37%; patients achieved viral suppression in 72% of person-years. The association between retention in care and viral suppression differed by disease severity, and was strongest for patients with lower CD4 counts: ≤ 200 [adjusted odds ratio (AOR) = 2.33, 95% confidence interval (CI): 2.16 to 2.51], 201-350 (AOR = 1.96, CI: 1.81 to 2.12), 351-500 (AOR = 1.65, CI: 1.53 to 1.78), and500 cells per cubic millimeter (AOR = 1.22, CI: 1.14 to 1.30) using the HRSA retention measure as a representative example.This is one of the first studies to report the impact of HIV disease severity on retention in care and viral suppression, demonstrating that retention in care is more strongly associated with viral suppression in patients with lower CD4 counts. These results have important implications for improving the health of patients with advanced HIV disease and for test and treat approaches to HIV prevention.

To the Editor—Little is known about the health outcomes of transgender persons living with human immunodeficiency virus (HIV), or PLWH [1]. Discrimination and social isolation may decrease engagement in care, while concerns about adverse interactions between antiretroviral therapy (ART) and hormone therapy may reduce ART receipt and medication adherence in this population [2–4]. We examined whether retention in care, use of ART, and HIV suppression differed between transgender and nontransgender PLWH. We performed a retrospective cohort study of HIV-infected adults (≥18 years) initiating care at 13 HIV clinics in the HIV Research Network (HIVRN) between 2001 and 2011. Clinics are located in the Northeastern (n = 6), Midwestern (n = 1), Southern (n = 3), and Western (n = 3) regions of the United States. Data from patients’ medical records were abstracted, quality assured, and assembled into a uniform database [5]. All clinics had institutional review board approval. Gender was self-identified and categorized as nontransgender men, nontransgender women, and transgender. Dichotomous outcomes were retention in care (≥2 primary HIV visits ≥90 days apart), use of ART, and HIV suppression (median HIV RNA

Hepatitis C virus (HCV) coinfection is present in 25% to 30% of HIV-infected persons in the United States [1]. Epidemiologic studies suggest that HCV seropositivity is linked to increased risk for chronic kidney disease (CKD) and end-stage renal disease (ESRD), in both the general population [2, 3] and human immunodeficiency virus (HIV)-infected individuals [4–6]. The association between HCV and CKD may be mediated by several potential mechanisms. First, HCV is associated with immune activation and immune complex glomerulonephritis [7–9]. Second, progressive liver disease, associated with longstanding HCV, may lead to hepatorenal syndrome. Third, HCV has been associated with an increased risk for diabetes [10], a leading cause of CKD and ESRD [11]. Additionally, the observed relationship between HCV and CKD may be confounded by heroin or cocaine use [12, 13], lower socioeconomic status [14, 15], and other factors that are associated with increased risk of CKD and ESRD. Approximately 20% of individuals who are infected with HCV clear the viremia, although the rate of HCV clearance is lower in HIV-infected persons [16]. To explore the contribution of persistent HCV viremia on CKD risk, we compared CKD incidence in a large cohort of HIV-infected subjects in North America according to HCV exposure status: (1) HCV seronegative, (2) HCV viremic (detectable HCV RNA) and (3) HCV aviremic (HCV seropositive with undetectable HCV RNA).

Background: U.S. state AIDS Drug Assistance Programs (ADAPs) are federally funded to provide antiretroviral therapy (ART) as the payer of last resort to eligible persons with HIV infection. States differ regarding their financial contributions to and ways of implementing these programs, and it remains unclear how this interstate variability affects HIV treatment outcomes. Methods: We analyzed data from HIV-infected individuals who were clinically-eligible for ART between 2001 and 2009 (i.e., a first reported CD4+ ,350 cells/uL or AIDS-defining illness) from 14 U.S. cohorts of the North American AIDS Cohort Collaboration on Research and Design (NA-ACCORD). Using propensity score matching and Cox regression, we assessed ART initiation (within 6 months following eligibility) and virologic suppression (within 1 year) based on differences in two state ADAP features: the amount of state funding in annual ADAP budgets and the implementation of waiting lists. We performed an a priori subgroup analysis in persons with a history of injection drug use (IDU). Results: Among 8,874 persons, 56% initiated ART within six months following eligibility. Persons living in states with no additional state contribution to the ADAP budget initiated ART on a less timely basis (hazard ratio [HR] 0.73, 95% CI 0.60– 0.88). Living in a state with an ADAP waiting list was not associated with less timely initiation (HR 1.12, 95% CI 0.87–1.45). Neither additional state contributions nor waiting lists were significantly associated with virologic suppression. Persons with an IDU history initiated ART on a less timely basis (HR 0.67, 95% CI 0.47–0.95). Conclusions: We found that living in states that did not contribute additionally to the ADAP budget was associated with delayed ART initiation when treatment was clinically indicated. Given the changing healthcare environment, continued assessment of the role of ADAPs and their features that facilitate prompt treatment is needed.

The patient-centered medical home (PCMH) has been introduced as a model for providing high-quality, comprehensive, patient-centered care that is both accessible and coordinated, and may provide a framework for optimizing the care of youth living with HIV (YLH). We surveyed six pediatric/adolescent HIV clinics caring for 578 patients (median age 19 years, 51% male, and 82% black) in July 2011 to assess conformity to the PCMH. Clinics completed a 50-item survey covering the six domains of the PCMH: (1) comprehensive care, (2) patient-centered care, (3) coordinated care, (4) accessible services, (5) quality and safety, and (6) health information technology. To determine conformity to the PCMH, a novel point-based scoring system was devised. Points were tabulated across clinics by domain to obtain an aggregate assessment of PCMH conformity. All six clinics responded. Overall, clinics attained a mean 75.8% [95% CI, 63.3-88.3%] on PCMH measures-scoring highest on patient-centered care (94.7%), coordinated care (83.3%), and quality and safety measures (76.7%), and lowest on health information technology (70.0%), accessible services (69.1%), and comprehensive care (61.1%). Clinics moderately conformed to the PCMH model. Areas for improvement include access to care, comprehensive care, and health information technology. Future studies are warranted to determine whether greater clinic PCMH conformity improves clinical outcomes and cost savings for YLH.

OBJECTIVE Thirty-day hospital readmission rate is receiving increasing attention as a quality-of-care indicator. The objective of this study was to determine readmission rates and to identify factors associated with readmission among persons living with HIV. DESIGN Prospective multicenter observational cohort. SETTING Nine US HIV clinics affiliated through the HIV Research Network. PARTICIPANTS Patients engaged in HIV care during 2005-2010. MAIN OUTCOME MEASURE(S) Readmission rate was defined as the proportion of hospitalizations followed by a readmission within 30 days. Factors in multivariate analyses included diagnostic categories, patient demographic and clinical characteristics, and having an outpatient follow-up visit. RESULTS Among 11,651 total index hospitalizations, the 30-day readmission rate was 19.3%. AIDS-defining illnesses (ADIs, 9.6% of index hospitalizations) and non-AIDS-defining infections (26.4% of index hospitalizations) had readmission rates of 26.2 and 16.6%, respectively. Factors independently associated with readmission included lower CD4 cell count [adjusted odds ratio 1.80 (1.53-2.11) for CD4 cell count

BackgroundCombination antiretroviral therapy (ART) has significantly increased survival among HIV-positive adults in the United States (U.S.) and Canada, but gains in life expectancy for this region have not been well characterized. We aim to estimate temporal changes in life expectancy among HIV-positive adults on ART from 2000-2007 in the U.S. and Canada.MethodsParticipants were from the North American AIDS Cohort Collaboration on Research and Design (NA-ACCORD), aged ≥20 years and on ART. Mortality rates were calculated using participants' person-time from January 1, 2000 or ART initiation until death, loss to follow-up, or administrative censoring December 31, 2007. Life expectancy at age 20, defined as the average number of additional years that a person of a specific age will live, provided the current age-specific mortality rates remain constant, was estimated using abridged life tables.ResultsThe crude mortality rate was 19.8/1,000 person-years, among 22,937 individuals contributing 82,022 person-years and 1,622 deaths. Life expectancy increased from 36.1 [standard error (SE) 0.5] to 51.4 [SE 0.5] years from 2000-2002 to 2006-2007. Men and women had comparable life expectancies in all periods except the last (2006-2007). Life expectancy was lower for individuals with a history of injection drug use, non-whites, and in patients with baseline CD4 counts ConclusionsA 20-year-old HIV-positive adult on ART in the U.S. or Canada is expected to live into their early 70 s, a life expectancy approaching that of the general population. Differences by sex, race, HIV transmission risk group, and CD4 count remain.

Since the mid-1990s, effective antiretroviral therapy (ART) regimens to treat human immunodeficiency virus (HIV) infection have improved in potency, tolerability, ease of use, and antiretroviral class diversity [1]. These have been linked to improvements in treatment adherence [2, 3] and clinical outcomes [4]. However, not all who are clinically eligible start treatment, a scenario sometimes associated with substance abuse and suboptimal insurance coverage, among other factors [5]. Monitoring trends in the successful initiation of ART is important, especially as population-based interventions such as expanded “test-and-treat” initiatives are introduced [6, 7] and as treatment guidelines recommend starting therapy at higher CD4+ counts [8, 9]. Collectively, these changes increase the identification of previously undiagnosed individuals and, consequently, the pool of persons newly eligible for treatment. Owing to their size and heterogeneity, collaborative observational studies are particularly useful to monitor trends [10]. They can help identify disparities among subpopulations, including those defined by geography, which may be informative as many health policies are instituted at the state or province level. Reducing HIV-related health disparities in vulnerable populations is a priority of both the US National HIV/AIDS Strategy and the Federal Initiative to Address HIV/AIDS in Canada [11, 12]. We examined ART initiation and virologic suppression among newly treatment-eligible individuals between 2001 and 2009 in the North American AIDS Cohort Collaboration on Research and Design (NA-ACCORD). To assess changes over time in this large cohort, we estimated the annual cumulative incidence of ART initiation and virologic suppression following treatment eligibility. We also examined factors associated with these outcomes, and explored heterogeneity by geographic location.

Background. Due to successful antiretroviral therapy (ART), perinatally human immunodeficiency virus (PHIV)–infected children are reaching adolescence and young adulthood. Adolescence is characterized by factors (eg, increased risk-taking) that may hamper management. We examined PHIV-infected youth in a multisite US cohort, assessing factors associated with changes in advanced immunosuppression and detectable viremia over time. Methods. We conducted a retrospective study of 521 PHIV-infected youth, 12 years and older, followed at 16 HIV clinics in the HIV Research Network between 2002 and 2010. We assessed demographic and clinical factors associated with CD4

Previously, herpes zoster (HZ) was found to occur at a higher rate in the HIV population than the general population. However, there are limited data about the incidence, risk factors, and clinical outcomes of HZ in the current antiretroviral therapy (ART) era.We identified HZ episodes in an urban HIV clinic cohort between 2002 and 2009. Three controls were matched to each case, and conditional logistic regression was used to assess for risk factors associated with incident HZ cases. Logistic regression was used to assess for factors associated with complicated HZ.One hundred eighty-three new HZ cases were identified in 4353 patients with 19,752 person-years (PY) of follow-up--an incidence rate 9.3/1000 PY. Cases were majority men (62%) and African American (75%), with a mean age of 39 years (interquartile range, 32-44 years). Fifty patients (28%) had complicated HZ with 12% developing postherpetic neuralgia. In multivariate regression, factors associated with the increased risk of HZ were having started ART within 90 days of the episode [adjusted odds ratio (AOR), 4.02; 95% confidence interval (CI), 1.31 to 12.41], having a viral load of400 copies per milliliter (AOR, 1.49; 95% CI, 1.00 to 2.24), and having a CD4350 cells per cubic millimeter (AOR, 2.46; 95% CI, 1.42 to 4.23) or 350 to 500 cells per cubic millimeter (AOR, 2.02; 95% CI, 1.14 to 3.57) as compared with CD4500 cells per cubic millimeter.The incidence of HZ is lower than previously reported in HIV cohorts but remains higher than the general population. Over one fourth of patients developed complicated HZ, which is remarkable given the young age of our population. Risk factors for HZ include markers of poor immune function, suggesting that appropriate ART may reduce the burden of HZ in this population.