231 results on '"McDonald, Aaron"'
Search Results
202. Cold play.
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McDonald, Aaron
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MEAT cooling ,REFRIGERATION & refrigerating machinery ,REFRIGERATED foods ,GOVERNMENT policy ,GREENHOUSE gases - Abstract
The article discusses trends in refrigeration technology used in meat businesses. Topics cited include the importance of efficient and eco-friendly refrigeration in meat businesses, the European Union's (EU) objectives in implementing fluorinated greenhouse gas or F-gas regulations on January 1, 2015 and the growing popularity of using electronic temperature management systems in the refrigeration systems of butchers.
- Published
- 2015
203. Shaping the future.
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Mcdonald, Aaron
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MEAT industry ,SKILLED labor recruitment ,BUSINESS planning - Published
- 2017
204. Problem solvers.
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Mcdonald, Aaron
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MEAT industry ,PORK ,CONSUMER preferences ,CANCER risk factors ,FEED utilization efficiency ,INTERNATIONAL trade ,ECONOMICS - Published
- 2017
205. Going for gold.
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McDonald, Aaron and Fortune, Aidan
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BUTCHERS ,INTERNATIONAL competition ,CONTESTS - Published
- 2017
206. Have skills, will travel.
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McDonald, Aaron
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BUTCHERS ,TRAVEL ,ANATOMY - Abstract
The article focuses on George Jephson who is a freelance butcher that has travelled the world learning new butchery practices. He claims to have studied the anatomy of the animal in the Natural History Museum and read a lot about how they work and what the bone structure is like. He is always keen to expand his knowledge and visited the U.S. to see their technique as compared to Great Britain and noticed the key difference to be the premiumisation of cuts by butchers.
- Published
- 2016
207. Moy Park announces £4m plant investment.
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MCDONALD, AARON
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CAPITAL investments ,POULTRY industry ,POULTRY products ,BUSINESS planning - Abstract
The article reports on the move of the poultry company Moy Park Ltd. regarding its £4 million investment at its Craigavon facilities in Northern Ireland. It states that the initiative was intended to boost its ready to eat cooked chicken range and provide opportunities for improvements and growth. It also notes that the investment cements the firm's position as one of the most advanced producers of ready to eat products in the country and Europe.
- Published
- 2016
208. Wearable Respiratory Monitoring and Feedback for Chronic Pain in Adult Survivors of Childhood Cancer: A Feasibility Randomized Controlled Trial From the Childhood Cancer Survivor Study.
- Author
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Alberts, Nicole M., Leisenring, Wendy M., Flynn, Jessica S., Whitton, Jillian, Gibson, Todd M., Jibb, Lindsay, McDonald, Aaron, Ford, James, Moraveji, Neema, Dear, Blake F., Krull, Kevin R., Robison, Leslie L., Stinson, Jennifer N., and Armstrong, Gregory T.
- Subjects
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CANCER survivors , *VENTILATION monitoring , *CHILDHOOD cancer , *CHRONIC pain , *PAIN management , *CANCER pain , *PSYCHOLOGICAL feedback - Abstract
PURPOSE: Approximately 40% of childhood cancer survivors experience chronic pain, with many also reporting pain-related disability. Given associations established in the general population among respiration, anxiety, and pain, continuous tracking and feedback of respiration may help survivors manage pain. METHODS: A feasibility, nonblinded, randomized controlled trial (RCT) comparing wearable respiratory monitoring with a control group examined feasibility, acceptability, and preliminary efficacy among survivors of childhood cancer with chronic pain who were ≥ 18 years of age, able to speak and read English, lived in the United States, and had access to a smartphone and the Internet. The primary outcomes were pain interference, pain severity, anxiety, negative affect, and perceived stress. The intervention group (n = 32) received a wearable respiratory monitor, used the device, and completed an in-application breathing exercise daily for 30 days. The control group (n = 33) received psychoeducation after completion of the study. RESULTS: Almost all participants in the intervention group (n = 31 of 32) and control group (n = 32 of 33) completed the study. Of those who completed the intervention, 90.3% wore the device for ≥ 50% of the trial. Posttreatment improvement for negative affect (Cohen d = 0.59; 95% CI, 0.09 to 1.10) was significantly greater in the intervention group compared with the control group. A follow-up study (n = 24) examined acceptability and feasibility of a second-generation device among those who completed the RCT. Most survivors (81.0%) wore the device daily during the trial and 85.7% reported satisfaction with the device and the application. CONCLUSION: The results of this pilot study support the acceptability and feasibility of wearable respiratory monitoring among survivors of childhood cancer. Larger randomized trials are needed to assess efficacy and maintenance of this intervention for chronic pain. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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209. Using School Reform Models to Improve Reading Achievement: A Longitudinal Study of Direct Instruction and Success For All in an Urban District.
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Ross, Steven M., Nunnery, John A., Goldfeder, Elizabeth, McDonald, Aaron, Rachor, Robert, Hornbeck, Matthew, and Fleischman, Steve
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EDUCATIONAL change , *ACADEMIC achievement , *READING , *ELEMENTARY education , *URBAN schools , *SCHOOL districts , *SCHOOL administration - Abstract
This research examined the effectiveness in an urban school district of 2 of the most widely used Comprehensive School Reform (CSR) programs—Direct Instruction (DI), implemented in 9 district elementary schools, and Success for All (SFA), implemented in 2 elementary schools. In examining impacts on student achievement and school change outcomes (e.g., teacher buy-in, school climate), a mixed-method research design was employed, encompassing both quantitative and qualitative analyses. Student achievement results on the reading sections of the Ohio Proficiency Test and the Stanford Achievement Test showed that both DI and SFA schools performed comparably to other district schools after statistically adjusting for school and student variables. Qualitative measures indicated generally positive support for both models by teachers, principals, and parents. However, in the case of DI, findings indicated weaknesses in implementation due largely to uncertainties involving school versus district roles and inadequate training. Results are discussed with regard to the influences of contextual and implementation variables on judging CSR model effectiveness in general and for specific schools and districts. [ABSTRACT FROM AUTHOR]
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- 2004
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210. First performance report of QIAreach™ Anti-SARS-CoV-2 Total Test, an innovative nanoparticle fluorescence digital detection platform.
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Stieber, Francis, Howard, Jenny, Rao, Sonia N., Kawamura, L. Masae, Manissero, Davide, Love, Joanna, Yang, Mei, Uchiyama, Robin, Parsons, Sean, Miller, Chris, Douwes, Harmony, McDonald, Aaron, Fairburn, Luke, and Boyle, Jeffrey
- Subjects
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IMMUNOGLOBULIN M , *INFECTION control , *SERODIAGNOSIS , *SARS-CoV-2 , *FLUORESCENCE - Abstract
• The QIAreach™ Anti-SARS-CoV-2 Total Test (Anti-CoV2) is a rapid, qualitative serological test. • Anti-CoV2 uses nanoparticle fluorescence technology to detect total antibody against SARS-CoV-2. • Anti-CoV2 had 100 % sensitivity (PPA; 95 % CI 88.4–100 %) and 100 % specificity (NPA; 95 % CI 95.2–100 %). • No cross-reactivity observed with seasonal coronaviruses or other respiratory pathogens tested. • Anti-CoV2 provides accurate qualitative detection of total antibodies against SARS-CoV-2. In 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused a global pandemic. Disease diagnosis, appropriate clinical management and infection control are all important factors in controlling the spread of SARS-CoV-2. The QIAreach™ Anti-SARS-CoV-2 Total Test (Anti-CoV2) is a rapid, qualitative serological test, using proprietary nanoparticle fluorescence technology to detect total antibody (IgA, IgM, and IgG) against SARS-CoV-2. Here we report the results of the US Food and Drug Administration (FDA) clinical agreement study. Thirty positive plasma or serum samples were taken from consenting individuals with polymerase chain reaction (PCR)-confirmed SARS-CoV-2 infection ≥14 days from symptom onset. Seventy-five samples from before the believed circulation of SARS-CoV-2 (November 1, 2019) were used to assess specificity. Positive percent agreement (PPA) and negative percent agreement (NPA) were calculated along with the corresponding exact two-sided 95 % confidence intervals (CI) using an FDA Emergency Use Authorized PCR test as the reference method. Anti-CoV2 was shown to have 100 % sensitivity (PPA; 95 % CI 88.4–100 %) and 100 % specificity (NPA; 95 % CI 95.2–100 %). Against 157 pre-pandemic samples, no cross-reactivity was observed with seasonal coronaviruses or other respiratory pathogens tested. Additionally, no interference was observed when samples were spiked with: conjugated bilirubin 0.4 mg/ml; unconjugated bilirubin 0.4 mg/ml; hemoglobin 5 mg/ml; prednisolone 0.12 mg/ml; triglycerides 15 mg/ml. In conclusion, Anti-CoV2 provides accurate qualitative detection of total antibodies against SARS-CoV-2. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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211. Communicating health information and improving coordination with primary care (CHIIP): Rationale and design of a randomized cardiovascular health promotion trial for adult survivors of childhood cancer.
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Chow, Eric J., Baldwin, Laura-Mae, Hagen, Anna M., Hudson, Melissa M., Gibson, Todd M., Kochar, Komal, McDonald, Aaron, Nathan, Paul C., Syrjala, Karen L., Taylor, Sarah L., Tonorezos, Emily S., Yasui, Yutaka, Armstrong, Gregory T., and Oeffinger, Kevin C.
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CHILDHOOD cancer , *CANCER patients , *CANCER relapse , *HEALTH promotion , *PRIMARY care - Abstract
Long-term survival for children diagnosed with cancer exceeds 80%. Notably, premature cardiovascular disease has become the leading non-cancer cause of late mortality among these survivors. This randomized controlled trial (RCT; NCT03104543) focuses on adult participants in the Childhood Cancer Survivor Study identified as high risk for ischemic heart disease or heart failure due to their cancer treatment. Participants undergo a home-based evaluation of blood pressure and laboratory tests to determine the prevalence of undiagnosed and/or undertreated hypertension, dyslipidemia, and diabetes. Those with abnormal values are then enrolled in an RCT to test the efficacy of a 12-month personalized, remotely delivered survivorship care plan (SCP) intervention designed to reduce undertreatment of these three target conditions. The intervention approximates a clinical encounter and is based on chronic disease self-management strategies. With a goal of 750, currently 342 out of 742 eligible participants approached have enrolled (46.1%). Initially, we randomized participants to different recruitment strategies, including shorter approach packets and a tiered consent, but did not find significant differences in participation rates (40.7% to 42.9%; p =.95). Subsequently, slightly greater participation was seen with larger upfront unconditional incentive checks ($50 vs. $25: 50.7% vs. 44.1%; p =.10). Overall, the financial impact of the $50 upfront incentive was cost neutral, and possibly cost-saving, vs. a $25 upfront incentive. The overall study will determine if a National Academy of Medicine-recommended SCP intervention can improve cardiovascular outcomes among long-term survivors of childhood cancer. Modifications to the recruitment strategy may improve participation rates over time. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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212. Characterization of chronic pain, pain interference, and daily pain experiences in adult survivors of childhood cancer: a report from the Childhood Cancer Survivor Study.
- Author
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Alberts NM, Leisenring W, Whitton J, Stratton K, Jibb L, Flynn J, Pizzo A, Brinkman TM, Birnie K, Gibson TM, McDonald A, Ford J, Olgin JE, Nathan PC, Stinson JN, and Armstrong GT
- Subjects
- Humans, Male, Female, Adult, Young Adult, Middle Aged, Pain Measurement methods, Chronic Pain psychology, Chronic Pain epidemiology, Cancer Survivors psychology, Neoplasms complications, Neoplasms psychology, Neoplasms epidemiology
- Abstract
Abstract: Although survivors of childhood cancer are at an increased risk, little is known about the prevalence of chronic pain, associated interference, and daily pain experiences. Survivors (N = 233; mean age = 40.8 years, range 22-64 years; mean time since diagnosis = 32.7 years) from the Childhood Cancer Survivor Study completed pain and psychosocial measures. Survivors with chronic pain completed 2-week, daily measures assessing pain and psychological symptoms using mHealth-based ecological momentary assessment. Multivariable-modified Poisson and linear regression models estimated prevalence ratio estimates (PR) and mean effects with 95% confidence intervals (CI) for associations of key risk factors with chronic pain and pain interference, respectively. Multilevel mixed models examined outcomes of daily pain and pain interference with prior day symptoms. Ninety-six survivors (41%) reported chronic pain, of whom 23 (24%) had severe interference. Chronic pain was associated with previous intravenous methotrexate treatment (PR = 1.6, 95% CI 1.1-2.3), respiratory (PR = 1.8, 95% CI 1.2-2.5), gastrointestinal (PR = 1.6, 95% CI 11.0-2.3), and neurological (PR = 1.5, 95% CI 1.0-2.1) chronic health conditions, unemployment (PR = 1.4, 95% CI 1.0-1.9) and clinically significant depression and anxiety (PR = 2.9, 95% CI 2.0-4.2), as well as a diagnosis of childhood Ewing sarcoma or osteosarcoma (PR = 1.9, 95% CI 1.0-3.5). Higher pain interference was associated with cardiovascular and neurological conditions, unemployment and clinical levels of depression and/or anxiety, and fear of cancer recurrence. For male, but not female survivors, low sleep quality, elevated anxiety, and elevated depression predicted high pain intensity and interference the next day. A substantial proportion of childhood cancer survivors experience chronic pain and significant associated interference. Chronic pain should be routinely evaluated, and interventions are needed., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the International Association for the Study of Pain.)
- Published
- 2024
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213. Late subsequent leukemia after childhood cancer: A report from the Childhood Cancer Survivor Study (CCSS).
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Ghosh T, Hyun G, Dhaduk R, Conces M, Arnold MA, Howell RM, Henderson TO, McDonald A, Robison LL, Yasui Y, Ness KK, Armstrong GT, Neglia JP, and Turcotte LM
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- Humans, Male, Female, Child, Adolescent, Incidence, Adult, Risk Factors, Young Adult, Child, Preschool, Neoplasms, Second Primary epidemiology, Neoplasms, Second Primary etiology, Neoplasms epidemiology, Neoplasms etiology, Infant, Time Factors, Cancer Survivors statistics & numerical data, Leukemia epidemiology, Leukemia etiology
- Abstract
Background: Subsequent short-latency leukemias are well-described among survivors of childhood cancer. However, late (5-14.9 years from diagnosis, LL) and very late (≥15 years from diagnosis, VLL) subsequent leukemias have not been well studied. We assessed risk factors, prevalence, and outcomes for LL and VLL in the Childhood Cancer Survivor Study cohort., Methods: Subsequent leukemias, among 25,656 five-year survivors, were self-reported and confirmed by pathology review. Standardized incidence ratios (SIR) and cumulative incidences were calculated, and relative risks (RR) were estimated using Cox regression for exposures., Results: Seventy-seven survivors developed subsequent leukemia, 49 survivors with LL (median time from diagnosis 7.8 years, range 5.0-14.5 years) and 28 with VLL (median time from diagnosis 25.4 years, range 15.9-42.8 years), with a cumulative incidence of 0.23% (95% CI 0.18%-0.30%) 20 years from diagnosis for all subsequent leukemias. The most common leukemia subtypes were acute myeloid leukemia, myelodysplastic syndrome, and chronic myeloid leukemia. Compared to the general population, survivors were at increased risk, for developing LL (SIR 9.3, 95% CI 7.0-12.1) and VLL (SIR 5.9, 95% CI 3.9-8.4). In multivariable relative risk analyses, cumulative epipodophyllotoxin dose >4000 mg/m
2 was associated with increased risk for LL and VLL (RR 4.5, 95% CI 2.0-9.9)., Conclusions: In this large series of late subsequent leukemias, survivors of childhood cancer are at increased risk, with no evidence of plateau over time. We observed most risk among survivors who received high cumulative doses of epipodophyllotoxins. Ongoing consideration for this late effect should continue beyond 10 years., (© 2024 The Author(s). Cancer Medicine published by John Wiley & Sons Ltd.)- Published
- 2024
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214. Exercise and QUality Diet after Leukemia: A Randomized Weight Loss Trial among Adult Survivors of Childhood Leukemia in the Childhood Cancer Survivor Study.
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Friedman DN, Chou JF, Clark JM, Moskowitz CS, Ford JS, Armstrong GT, Mubdi NZ, McDonald A, Nathan PC, Sklar CA, Ramanathan LV, Robison LL, Oeffinger KC, and Tonorezos ES
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- Humans, Female, Male, Adult, Exercise, Precursor Cell Lymphoblastic Leukemia-Lymphoma radiotherapy, Child, Cancer Survivors statistics & numerical data, Weight Loss
- Abstract
Background: Obesity is prevalent in childhood cancer survivors and interacts with cancer treatments to potentiate risk for cardiovascular (CV) death. We tested a remote weight-loss intervention trial that was effective among adults with CV risk factors in a cohort of adult survivors of childhood acute lymphoblastic leukemia (ALL) with overweight/obesity., Methods: In this phase III efficacy trial, survivors of ALL enrolled in the Childhood Cancer Survivor Study with a body mass index ≥25 kg/m2 were randomized to a remotely delivered weight-loss intervention versus self-directed weight loss, stratified by history of cranial radiotherapy. The primary endpoint was the difference in weight loss at 24 months in an intent-to-treat analysis. Analyses were performed using linear mixed-effects models., Results: Among 358 survivors (59% female; median attained age: 37 years; IQR: 33-43 years), the baseline mean (SD) weight was 98.6 kg (24.0) for the intervention group (n = 181) and 94.9 kg (20.3) for controls (n = 177). Adherence to the intervention was poor; 15% of individuals in the intervention group completed 24/30 planned coaching calls. Weight at 24 months was available for 274 (77%) participants. After controlling for cranial radiotherapy, sex, race/ethnicity, and age, the mean (SE) change in weight from baseline to 24 months was -0.4 kg (0.8) for the intervention group and 0.2 kg (0.6) for control participants (P = 0.59)., Conclusions: A remote weight-loss intervention that was successful among adults with CV conditions did not result in significant weight loss among adult survivors of childhood ALL., Impact: Future interventions in this population must be tailored to the unique needs of survivors to encourage engagement and adherence. See related In the Spotlight, p. 1147., (©2024 American Association for Cancer Research.)
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- 2024
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215. Using mHealth Technology to Evaluate Daily Symptom Burden among Adult Survivors of Childhood Cancer: A Feasibility Study.
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Howell KE, Baedke JL, Bagherzadeh F, McDonald A, Nathan PC, Ness KK, Hudson MM, Armstrong GT, Yasui Y, and Huang IC
- Abstract
Background: Cancer therapies predispose survivors to a high symptom burden. This study utilized mobile health (mHealth) technology to assess the feasibility of collecting daily symptoms from adult survivors of childhood cancer to evaluate symptom fluctuation and associations with future health-related quality-of-life (HRQOL)., Methods: This prospective study used an mHealth platform to distribute a 20-item cancer-related symptom survey (5 consecutive days each month) and an HRQOL survey (the day after the symptom survey) over 3 consecutive months to participants from the Childhood Cancer Survivor Study. These surveys comprised a PROMIS-29 Profile and Neuro-QOL assessed HRQOL. Daily symptom burden was calculated by summing the severity (mild, moderate, or severe) of 20 symptoms. Univariate linear mixed-effects models were used to analyze total, person-to-person, day-to-day, and month-to-month variability for the burden of 20 individual symptoms. Multivariable linear regression was used to analyze the association between daily symptom burden in the first month and HRQOL in the third month, adjusted for covariates., Results: Out of the 60 survivors invited, 41 participated in this study (68% enrollment rate); 83% reported their symptoms ≥3 times and 95% reported HRQOL in each study week across 3 months. Variability of daily symptom burden differed from person-to-person (74%), day-to-day (18%), and month-to-month (8%). Higher first-month symptom burden was associated with poorer HRQOL related to anxiety (regression coefficient: 6.56; 95% CI: 4.10-9.02), depression (6.32; 95% CI: 3.18-9.47), fatigue (7.93; 95% CI: 5.11-10.80), sleep (6.07; 95% CI: 3.43-8.70), pain (5.16; 95% CI: 2.11-8.22), and cognitive function (-6.89; 95% CI: -10.00 to -3.79) in the third month., Conclusions: Daily assessment revealed fluctuations in symptomology, and higher symptom burden was associated with poorer HRQOL in the future. Utilizing mHealth technology for daily symptom assessment improves our understanding of symptom dynamics and sources of variability.
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- 2024
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216. Adverse Childhood Experiences, Resilience, and Cardiovascular Disease in Adult Survivors of Childhood Cancer: A Report from the Childhood Cancer Survivor Study.
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Schwartz LF, Stratton KL, Leisenring WM, Rodriguez SM, Alston S, McDonald A, Vukadinovich C, Rinehardt D, Oeffinger KC, Chow EJ, Krull KR, Brinkman TM, Nathan PC, Tan MM, McCrae JS, Burkhardt T, Ness KK, Armstrong GT, and Henderson TO
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- Humans, Female, Male, Case-Control Studies, Adult, Child, Middle Aged, Young Adult, Adolescent, Cardiovascular Diseases epidemiology, Cancer Survivors psychology, Cancer Survivors statistics & numerical data, Adverse Childhood Experiences statistics & numerical data, Adverse Childhood Experiences psychology, Neoplasms psychology, Neoplasms epidemiology, Resilience, Psychological
- Abstract
Background: The impact of adverse childhood experiences (ACE, e.g., abuse, neglect, and/or household dysfunction experienced before the age of 18) and resilience on risk for cardiovascular disease (CVD) has not previously been investigated in adult survivors of childhood cancer., Methods: We conducted a nested case-control study among long-term, adult-aged survivors of childhood cancer from the Childhood Cancer Survivor Study. Self-report questionnaires ascertained ACEs and resilience, and scores were compared between cases with serious/life-threatening CVD and controls without CVD matched on demographic and cardiotoxic treatment factors., Results: Among 95 cases and 261 controls, the mean ACE score was 1.4 for both groups; 53.4% of survivors endorsed ≥1 ACE. No association was observed between ACEs or resilience and CVD in adjusted models., Conclusions: ACEs and resilience do not appear to contribute to CVD risk for adult survivors of childhood cancer with cardiotoxic treatment exposures., Impact: Although not associated with CVD in this population, ACEs are associated with serious health issues in other populations. Therefore, future studies could investigate the effects of ACEs on other health outcomes affecting childhood cancer survivors., (©2024 American Association for Cancer Research.)
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- 2024
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217. Health Insurance Navigation Tools Intervention: A Pilot Trial Within the Childhood Cancer Survivor Study.
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Park ER, Kirchhoff AC, Donelan K, Perez GK, McDonald A, Bliss CC, Foor A, van Thiel Berghuijs KM, Waters AR, Durieux N, Leisenring W, Armstrong GT, Ponzani C, Lopez A, Vaca Lopez PL, Battaglia T, Galbraith AA, and Kuhlthau KA
- Subjects
- Humans, Female, Male, Pilot Projects, Adult, Patient Navigation, Child, Middle Aged, Cancer Survivors, Insurance, Health
- Abstract
Purpose: Childhood cancer survivors are at increased risk for underinsurance and health insurance-related financial burden. Interventions targeting health insurance literacy (HIL) to improve the ability to understand and use health insurance are needed., Methods: We codeveloped a four-session health insurance navigation tools (HINT) intervention, delivered synchronously by a patient navigator, and a corresponding booklet. We conducted a randomized pilot trial with survivors from the Childhood Cancer Survivor Study comparing HINT with enhanced usual care (EUC; booklet). We assessed feasibility, acceptability, and preliminary efficacy (HIL, primary outcome; knowledge and confidence with health insurance terms and activity) on a 5-month survey and exit interviews., Results: Among 231 invited, 82 (32.5%) survivors enrolled (53.7% female; median age 39 years, 75.6% had employer-sponsored insurance). Baseline HIL scores were low (mean = 28.5; 16-64; lower scores better); many lacked knowledge of Affordable Care Act (ACA) provisions. 80.5% completed four HINT sessions, and 93.9% completed the follow-up survey. Participants rated HINT's helpfulness a mean of 8.9 (0-10). Exit interviews confirmed HINT's acceptability, specifically its virtual and personalized delivery and helpfulness in building confidence in understanding one's coverage. Compared with EUC, HINT significantly improved HIL (effect size = 0.94. P < .001), ACA provisions knowledge (effect size = 0.73, P = .003), psychological financial hardship (effect size = 0.64, P < .006), and health insurance satisfaction (effect size = 0.55, P = .03)., Conclusion: Results support the feasibility and acceptability of a virtual health insurance navigation program targeted for childhood survivors to improve HIL. Randomized trials to assess the efficacy and sustainability of health insurance navigation on HIL and financial burden are needed.
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- 2024
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218. Improved Cardiomyopathy Risk Prediction Using Global Longitudinal Strain and N-Terminal-Pro-B-Type Natriuretic Peptide in Survivors of Childhood Cancer Exposed to Cardiotoxic Therapy.
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Ehrhardt MJ, Liu Q, Mulrooney DA, Rhea IB, Dixon SB, Lucas JT Jr, Sapkota Y, Shelton K, Ness KK, Srivastava DK, McDonald A, Robison LL, Hudson MM, Yasui Y, and Armstrong GT
- Subjects
- Male, Female, Humans, Child, Adult, Natriuretic Peptide, Brain, Stroke Volume, Global Longitudinal Strain, Ventricular Function, Left, Biomarkers, Peptide Fragments, Cardiotoxicity etiology, Anthracyclines adverse effects, Antibiotics, Antineoplastic adverse effects, Cancer Survivors, Neoplasms drug therapy, Cardiomyopathies chemically induced, Cardiomyopathies diagnosis, Cardiomyopathies epidemiology
- Abstract
Purpose: To leverage baseline global longitudinal strain (GLS) and N-terminal-pro-B-type natriuretic peptide (NT-proBNP) to identify childhood cancer survivors with a normal left ventricular ejection fraction (LVEF) at highest risk of future treatment-related cardiomyopathy., Methods: St Jude Lifetime Cohort participants ≥5 years from diagnosis, at increased risk for cardiomyopathy per the International Guideline Harmonization Group (IGHG), with an LVEF ≥50% on baseline echocardiography (n = 1,483) underwent measurement of GLS (n = 1,483) and NT-proBNP (n = 1,052; 71%). Multivariable Cox regression models estimated hazard ratios (HRs) and 95% CIs for postbaseline cardiomyopathy (modified Common Terminology Criteria for Adverse Events ≥grade 2) incidence in association with echocardiogram-based GLS (≥-18) and/or NT-proBNP (>age-sex-specific 97.5th percentiles). Prediction performance was assessed using AUC in models with and without GLS and NT-proBNP and compared using DeLong's test for IGHG moderate- and high-risk individuals treated with anthracyclines., Results: Among survivors (median age, 37.6; range, 10.2-70.4 years), 162 (11.1%) developed ≥grade 2 cardiomyopathy 5.1 (0.7-10.0) years from baseline assessment. The 5-year cumulative incidence of cardiomyopathy for survivors with and without abnormal GLS was, respectively, 7.3% (95% CI, 4.7 to 9.9) versus 4.4% (95% CI, 3.0 to 5.7) and abnormal NT-proBNP was 9.9% (95% CI, 5.8 to 14.1) versus 4.7% (95% CI, 3.2 to 6.2). Among survivors with a normal LVEF, abnormal baseline GLS and NT-proBNP identified anthracycline-exposed, IGHG-defined moderate-/high-risk survivors at a four-fold increased hazard of postbaseline cardiomyopathy (HR, 4.39 [95% CI, 2.46 to 7.83]; P < .001), increasing to a HR of 14.16 (95% CI, 6.45 to 31.08; P < .001) among survivors who received ≥250 mg/m
2 of anthracyclines. Six years after baseline, AUCs for individual risk prediction were 0.70 for models with and 0.63 for models without GLS and NT-proBNP ( P = .022)., Conclusion: GLS and NT-proBNP should be considered for improved identification of survivors at high risk for future cardiomyopathy.- Published
- 2024
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219. The ENGAGE study: a 3-arm randomized hybrid type 1 effectiveness and implementation study of an in-home, collaborative PCP model of remote telegenetic services to increase uptake of cancer genetic services in childhood cancer survivors.
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Henderson TO, Allen MA, Mim R, Egleston B, Fleisher L, Elkin E, Oeffinger K, Krull K, Ofidis D, Mcleod B, Griffin H, Wood E, Cacioppo C, Weinberg M, Brown S, Howe S, McDonald A, Vukadinovich C, Alston S, Rinehart D, Armstrong GT, and Bradbury AR
- Subjects
- Humans, Child, Genetic Testing, Cancer Survivors, Neoplasms genetics
- Abstract
Background: Germline cancer genetic testing has become a standard evidence-based practice, with established risk reduction and screening guidelines for genetic carriers. Access to genetic services is limited in many places, which leaves many genetic carriers unidentified and at risk for late diagnosis of cancers and poor outcomes. This poses a problem for childhood cancer survivors, as this is a population with an increased risk for subsequent malignant neoplasms (SMN) due to cancer therapy or inherited cancer predisposition. The ENGaging and Activating cancer survivors in Genetic services (ENGAGE) study evaluates the effectiveness of an in-home, collaborative PCP model of remote telegenetic services to increase uptake of cancer genetic testing in childhood cancer survivors compared to usual care options for genetic testing., Methods: The ENGAGE study is a 3-arm randomized hybrid type 1 effectiveness and implementation study within the Childhood Cancer Survivor Study population which tests a clinical intervention while gathering information on its delivery during the effectiveness trial and its potential for future implementation among 360 participants. Participants are randomized into three arms. Those randomized to Arm A receive genetic services via videoconferencing, those in Arm B receive these services by phone, and those randomized to Arm C will receive usual care services., Discussion: With many barriers to accessing genetic services, innovative delivery models are needed to address this gap and increase uptake of genetic services. The ENGAGE study evaluates the effectiveness of an adapted model of remote delivery of genetic services to increase the uptake of recommended genetic testing in childhood cancer survivors. This study assesses the uptake in remote genetic services and identify barriers to uptake to inform future recommendations and a theoretically-informed process evaluation which can inform modifications to enhance dissemination beyond this study population and to realize the benefits of precision medicine., Trial Registration: This protocol was registered at clinicaltrials.gov (NCT04455698) on July 2, 2020., (© 2024. The Author(s).)
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- 2024
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220. Serological survey to estimate SARS-CoV-2 infection and antibody seroprevalence at a large public university: A cross-sectional study.
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Hou CW, Williams S, Taylor K, Boyle V, Bobbett B, Kouvetakis J, Nguyen K, McDonald A, Harris V, Nussle B, Scharf P, Jehn ML, Lant T, Magee M, Chung Y, LaBaer J, and Murugan V
- Subjects
- Adult, Humans, Cross-Sectional Studies, Prospective Studies, Seroepidemiologic Studies, Universities, SARS-CoV-2, Antibodies, Viral, COVID-19 epidemiology
- Abstract
Objective: This study investigated the seroprevalence of SARS-CoV-2 antibodies among adults over 18 years., Design: Prospective cohort study., Settings: A large public university., Participants: This study took volunteers over 5 days and recruited 1064 adult participants., Primary Outcome Measures: Seroprevalence of SARS-CoV-2-specific antibodies due to previous exposure to SARS-CoV-2 and/or vaccination., Results: The seroprevalence of the antireceptor binding domain (RBD) antibody was 90% by a lateral flow assay and 88% by a semiquantitative chemiluminescent immunoassay. The seroprevalence for antinucleocapsid was 20%. In addition, individuals with previous natural COVID-19 infection plus vaccination had higher anti-RBD antibody levels compared with those who had vaccination only or infection only. Individuals who had a breakthrough infection had the highest anti-RBD antibody levels., Conclusion: Accurate estimates of the cumulative incidence of SARS-CoV-2 infection can inform the development of university risk mitigation protocols such as encouraging booster shots, extending mask mandates or reverting to online classes. It could help us to have clear guidance to act at the first sign of the next surge as well, especially since there is a surge of COVID-19 subvariant infections., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2023
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221. Advancing Survivors Knowledge (ASK Study) of Skin Cancer Surveillance After Childhood Cancer: A Randomized Controlled Trial in the Childhood Cancer Survivor Study.
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Geller AC, Coroiu A, Keske RR, Haneuse S, Davine JA, Emmons KM, Daniel CL, Gibson TM, McDonald AJ, Robison LL, Mertens AC, Elkin EB, Marghoob A, and Armstrong GT
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- Child, Humans, Adult, Middle Aged, Survivors, Risk Factors, Cancer Survivors, Skin Neoplasms diagnosis, Skin Neoplasms prevention & control, Text Messaging
- Abstract
Purpose: To improve skin cancer screening among survivors of childhood cancer treated with radiotherapy where skin cancers make up 58% of all subsequent neoplasms. Less than 30% of survivors currently complete recommended skin cancer screening., Patients and Methods: This randomized controlled comparative effectiveness trial evaluated patient and provider activation (PAE + MD) and patient and provider activation with teledermoscopy (PAE + MD + TD) compared with patient activation alone (PAE), which included print materials, text messaging, and a website on skin cancer risk factors and screening behaviors. Seven hundred twenty-eight participants from the Childhood Cancer Survivor Study (median age at baseline 44 years), age > 18 years, treated with radiotherapy as children, and without previous history of skin cancer were randomly assigned (1:1:1). Primary outcomes included receiving a physician skin examination at 12 months and conducting a skin self-examination at 18 months after intervention., Results: Rates of physician skin examinations increased significantly from baseline to 12 months in all three intervention groups: PAE, 24%-39%, relative risk [RR], 1.65, 95% CI, 1.32 to 2.08; PAE + MD, 24% to 39%, RR, 1.56, 95% CI, 1.25 to 1.97; PAE + MD + TD, 24% to 46%, RR, 1.89, 95% CI, 1.51 to 2.37. The increase in rates did not differ between groups ( P = .49). Similarly, rates of skin self-examinations increased significantly from baseline to 18 months in all three groups: PAE, 29% to 50%, RR, 1.75, 95% CI, 1.42 to 2.16; PAE + MD, 31% to 58%, RR, 1.85, 95% CI, 1.52 to 2.26; PAE + MD + TD, 29% to 58%, RR, 1.95, 95% CI, 1.59 to 2.40, but the increase in rates did not differ between groups ( P = .43)., Conclusion: Although skin cancer screening rates increased more than 1.5-fold in each of the intervention groups, there were no differences between groups. Any of these interventions, if implemented, could improve skin cancer prevention behaviors among childhood cancer survivors.
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- 2023
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222. Underdiagnosis and Undertreatment of Modifiable Cardiovascular Risk Factors Among Survivors of Childhood Cancer.
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Chow EJ, Chen Y, Armstrong GT, Baldwin LM, Cai CR, Gibson TM, Hudson MM, McDonald A, Nathan PC, Olgin JE, Syrjala KL, Tonorezos ES, Oeffinger KC, and Yasui Y
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- Adult, Aged, Child, Cross-Sectional Studies, Heart Disease Risk Factors, Humans, Male, Nutrition Surveys, Prevalence, Risk Factors, Survivors, Cancer Survivors, Cardiovascular Diseases etiology, Dyslipidemias complications, Dyslipidemias diagnosis, Dyslipidemias epidemiology, Hypertension diagnosis, Hypertension drug therapy, Hypertension epidemiology, Neoplasms diagnosis, Neoplasms epidemiology, Neoplasms therapy
- Abstract
Background Determine the prevalence and predictors associated with underdiagnosis and undertreatment of modifiable cardiovascular disease (CVD) risk factors (hypertension, dyslipidemia, glucose intolerance/diabetes) among adult survivors of childhood cancer at high risk of premature CVD. Methods and Results This was a cross-sectional study of adult-aged survivors of childhood cancer treated with anthracyclines or chest radiotherapy, recruited across 9 US metropolitan regions. Survivors completed questionnaires and in-home clinical assessments. The comparator group was a matched sample from the National Health and Nutrition Examination Survey. Multivariable logistic regression estimated the risk (odds ratios) of CVD risk factor underdiagnosis and undertreatment among survivors compared with the National Health and Nutrition Examination Survey. Survivors (n=571; median age, 37.7 years and 28.5 years from cancer diagnosis) were more likely to have a preexisting CVD risk factor than the National Health and Nutrition Examination Survey (n=345; P <0.05 for all factors). While rates of CVD risk factor underdiagnosis were similar (27.1% survivors versus 26.1% National Health and Nutrition Examination Survey; P =0.73), survivors were more likely undertreated (21.0% versus 13.9%, P =0.007; odds ratio, 1.8, 95% CI, 1.2-2.7). Among survivors, the most underdiagnosed and undertreated risk factors were hypertension (18.9%) and dyslipidemia (16.3%), respectively. Men and survivors who were overweight/obese were more likely to be underdiagnosed and undertreated. Those with multiple adverse lifestyle factors were also more likely undertreated (odds ratio, 2.2, 95% CI, 1.1-4.5). Greater health-related self-efficacy was associated with reduced undertreatment (odds ratio, 0.5; 95% CI, 0.3-0.8). Conclusions Greater awareness of among primary care providers and cardiologists, combined with improving self-efficacy among survivors, may mitigate the risk of underdiagnosed and undertreated CVD risk factors among adult-aged survivors of childhood cancer. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT03104543.
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- 2022
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223. Implementing a mHealth intervention to increase colorectal cancer screening among high-risk cancer survivors treated with radiotherapy in the Childhood Cancer Survivor Study (CCSS).
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Henderson TO, Bardwell JK, Moskowitz CS, McDonald A, Vukadinovich C, Lam H, Curry M, Oeffinger KC, Ford JS, Elkin EB, Nathan PC, Armstrong GT, and Kim K
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- Adult, Child, Humans, Neoplasms radiotherapy, Survivors, Cancer Survivors, Colorectal Neoplasms diagnosis, Colorectal Neoplasms etiology, Early Detection of Cancer methods, Radiotherapy adverse effects, Telemedicine
- Abstract
Background: Cancer survivors treated with any dose of radiation to the abdomen, pelvis, spine, or total body irradiation (TBI) are at increased risk for developing colorectal cancer (CRC) compared to the general population. Since earlier detection of CRC is strongly associated with improved survival, the Children's Oncology Group (COG) Long-Term Follow-Up Guidelines recommend that these high-risk cancer survivors begin CRC screening via a colonoscopy or a multitarget stool DNA test at the age of 30 years or 5 years following the radiation treatment (whichever occurs last). However, only 37% (95% CI 34.1-39.9%) of high-risk survivors adhere to CRC surveillance. The Activating cancer Survivors and their Primary care providers (PCP) to Increase colorectal cancer Screening (ASPIRES) study is designed to assess the efficacy of an intervention to increase the rate of CRC screening among high-risk cancer survivors through interactive, educational text-messages and resources provided to participants, and CRC screening resources provided to their PCPs., Methods: ASPIRES is a three-arm, hybrid type II effectiveness and implementation study designed to simultaneously evaluate the efficacy of an intervention and assess the implementation process among participants in the Childhood Cancer Survivor Study (CCSS), a North American longitudinal cohort of childhood cancer survivors. The Control (C) arm participants receive electronic resources, participants in Treatment arm 1 receive electronic resources as well as interactive text messages, and participants in Treatment arm 2 receive electronic educational resources, interactive text messages, and their PCP's receive faxed materials. We describe our plan to collect quantitative (questionnaires, medical records, study logs, CCSS data) and qualitative (semi-structured interviews) intervention outcome data as well as quantitative (questionnaires) and qualitative (interviews) data on the implementation process., Discussion: There is a critical need to increase the rate of CRC screening among high-risk cancer survivors. This hybrid effectiveness-implementation study will evaluate the effectiveness and implementation of an mHealth intervention consisting of interactive text-messages, electronic tools, and primary care provider resources. Findings from this research will advance CRC prevention efforts by enhancing understanding of the effectiveness of an mHealth intervention and highlighting factors that determine the successful implementation of this intervention within the high-risk cancer survivor population., Trial Registration: This protocol was registered at clinicaltrials.gov (identifier NCT05084833 ) on October 20, 2021., (© 2022. The Author(s).)
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- 2022
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224. Impact of COVID-19 pandemic on a large cohort of adult survivors of childhood cancer.
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Krull KR, McDonald A, Goodman P, Vukadinovich C, Ford J, Leisenring WM, Chow EJ, Robison LL, and Armstrong GT
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- Adult, Child, Female, Humans, Male, Middle Aged, Retrospective Studies, Siblings, Social Isolation, Unemployment, COVID-19 epidemiology, Cancer Survivors, Neoplasms epidemiology, Neoplasms psychology
- Abstract
Childhood cancersurvivors may be differentially impacted by coronavirus disease 2019 (COVID-19). From April to June of 2020, we examined psychosocial/health concerns in 4148 adult survivors and 571 siblings. Although more survivors reported concerns about getting sick (p = .002) and needing hospitalization (p = .003) in general, survivors and siblings were comparably concerned about being infected with and the consequences of COVID-19. Cranial radiation was associated with social isolation (relative risk [RR] = 1.3, CI = 1.1-1.7), and central nervous system (CNS) tumors were associated with unemployment due to COVID-19 (RR = 1.7, CI = 1.2-2.2). Some survivors appear more vulnerable and may require more support to meet health care and vocational needs during COVID-19, though siblings also perceive substantial risk., (© 2021 Wiley Periodicals LLC.)
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- 2021
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225. Anatomy Students That are "Team-Taught" May Achieve Better Results Than Those That are "Sole-Taught".
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McDonald AC, Green RA, Zacharias A, Whitburn LY, Hughes DL, Colasante M, and McGowan H
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- Dissection, Educational Measurement, Humans, Students, Anatomy education
- Abstract
Anatomy practical classes have traditionally been taught by a team of demonstrators (team-taught) in a large dissection room. More recently, particularly in nonmedical contexts, practical classes have been taught by one teacher (sole-taught) to smaller student groups. The aim of this study was to compare student outcomes when the same course was delivered with practical classes team-taught at one campus (metropolitan) and sole-taught at a second campus (regional) while maintaining similar staff to student ratios. This anatomy course, for physiotherapy and lower academically credentialed exercise science/physiology students, utilized blended delivery whereby most content was delivered online and practical classes comprised the main face-to-face teaching. In 2018, the metropolitan campus introduced team-teaching practical classes while the regional campus continued with sole-teaching. Student marks and engagement with online content were compared between campuses and to the previous year (2017) when both campuses had sole-taught practical classes. While final marks for the course increased overall in 2018 (P < 0.01), exercise science/physiology students at the metropolitan campus (team-taught) improved their final marks (53.5 ± 1.1%) compared to a slight decrease for the regional (sole-taught) campus (44.8 ± 1.4%) (P < 0.01). There were no differences between campuses for physiotherapy students in 2018. Student engagement with online content did not contribute to the improvement in marks for exercise science/physiology students. Introduction of a team-teaching format improved student marks, particularly for the lower academically credentialed students. Team-teaching should be considered as the preferred format for anatomy practical classes, particularly in courses involving students with diverse academic credentials., (© 2020 American Association for Anatomy.)
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- 2021
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226. Skin Cancer Early Detection Practices among Adult Survivors of Childhood Cancer Treated with Radiation.
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Geller AC, Keske RR, Haneuse S, Davine JA, Emmons KM, Daniel CL, Gibson TM, Marghoob A, Mertens AC, McDonald AJ, Robison LL, Howell RM, Whitton JA, Coroiu A, Leisenring WM, and Armstrong GT
- Subjects
- Adolescent, Adult, Aged, Cancer Survivors psychology, Child, Child, Preschool, Cross-Sectional Studies, Early Detection of Cancer psychology, Female, Humans, Infant, Infant, Newborn, Male, Middle Aged, Neoplasms mortality, Office Visits statistics & numerical data, Patient Acceptance of Health Care psychology, Patient Acceptance of Health Care statistics & numerical data, Self-Examination psychology, Skin radiation effects, Skin Neoplasms etiology, Young Adult, Cancer Survivors statistics & numerical data, Early Detection of Cancer statistics & numerical data, Neoplasms radiotherapy, Self-Examination statistics & numerical data, Skin Neoplasms diagnosis
- Abstract
Because rates of skin cancer are greater among adult survivors of childhood cancer who received radiation therapy than among the general population, the National Cancer Institute recommends skin self-examinations and annual physician examination. There has been no comprehensive assessment of survivors' adherence to the skin cancer screening guidelines associated with skin self-examination (SSE) and physician whole-body skin examination (PSE). We conducted a cross-sectional survey of radiation-treated, adult 5-year survivors of childhood cancer, diagnosed between 1970 and 1986, in the Childhood Cancer Survivor Study cohort. Multivariate multinomial logit regression investigated the association between demographic, cancer diagnosis, patient activation, cancer treatment characteristics, and skin cancer screening practice. Among 728 survivors, 13.1% reported performing SSE in the prior 2 months plus receiving PSE in the prior 12 months, and 16.4% and 11.0% reported performing only an SSE or a PSE, respectively; 59.5% of survivors reported having had neither. Participants at the highest patient activation score were most likely to report SSE plus PSE compared with neither (adjusted relative risk ratio = 4.16, 95% confidence interval = 1.34-12.85). Most adult survivors of childhood cancer who had radiation therapy do not practice strategies that promote early detection of skin cancer. Interventions designed to activate survivors to increase their participation in screening are needed., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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227. Promoting Breast Cancer Surveillance: The EMPOWER Study, a Randomized Clinical Trial in the Childhood Cancer Survivor Study.
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Oeffinger KC, Ford JS, Moskowitz CS, Chou JF, Henderson TO, Hudson MM, Diller L, McDonald A, Ford J, Mubdi NZ, Rinehart D, Vukadinovich C, Gibson TM, Anderson N, Elkin EB, Garrett K, Rebull M, Leisenring W, Robison LL, and Armstrong GT
- Subjects
- Adult, Age Factors, Breast Neoplasms diagnostic imaging, Female, Hodgkin Disease radiotherapy, Humans, Mammography, Middle Aged, Breast Neoplasms diagnosis, Cancer Survivors, Early Detection of Cancer methods, Patient Education as Topic methods
- Abstract
Purpose: The aim of the current study was to increase the uptake of screening mammography among high-risk women who were treated for a childhood cancer with chest radiotherapy., Patients and Methods: Two hundred four female survivors in the Childhood Cancer Survivor Study who were treated with chest radiotherapy with 20 Gy or greater, age 25 to 50 years, and without breast imaging in the past 24 months were randomly assigned 2:1 to receive a mailed informational packet followed by a tailored telephone-delivered brief motivational interview (intervention) versus an attention control. Primary outcome was the difference in the proportion of participants who completed a screening mammogram by 12 months as evaluated in an intent-to-treat analysis. Stratum-adjusted relative risk (RR) and 95% CI were estimated using the Cochran-Mantel-Haenszel method. Secondary outcomes included the completion of screening breast magnetic resonance imaging (MRI) and barriers to screening and moderating factors., Results: Women in the intervention group were significantly more likely than those in the control group to report a mammogram (45 [33.1%] of 136 v 12 [17.6%] of 68; RR, 1.9; 95% CI, 1.1 to 3.3). The intervention was more successful among women age 25 to 39 years (RR, 2.2; 95% CI, 1.1 to 4.7) than among those age 40 to 50 years (RR, 1.4; 95% CI, 0.6 to 3.2). The proportion of women who reported a breast MRI at 12 months was similar between the two groups: 16.2% (intervention) compared with 13.2% (control; RR, 1.2; 95% CI, 0.6 to 2.5). Primary barriers to completing a screening mammogram and/or breast MRI included lack of physician recommendation, deferred action by survivor, cost, and absence of symptoms., Conclusion: Use of mailed materials followed by telephone-delivered counseling increased mammography screening rates in survivors at high risk for breast cancer; however, this approach did not increase the rate of breast MRI. Cost of imaging and physician recommendation were important barriers that should be addressed in future studies.
- Published
- 2019
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228. The Effect of Content Delivery Style on Student Performance in Anatomy.
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White LJ, McGowan HW, and McDonald AC
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- Academic Performance statistics & numerical data, Computer-Assisted Instruction methods, Curriculum, Humans, Personal Satisfaction, Program Evaluation, Students, Medical statistics & numerical data, Anatomy education, Education, Distance methods, Education, Medical, Undergraduate methods, Learning, Students, Medical psychology
- Abstract
The development of new technologies and ensuing pedagogical research has led many tertiary institutions to integrate and adopt online learning strategies. The authors of this study have incorporated online learning strategies into existing educational practices of a second year anatomy course, resulting in half of the course content delivered via face-to-face lectures, and half delivered online via tailored video vignettes, with accompanying worksheets and activities. The effect of the content delivery mode on student learning was analyzed by tailoring questions to content presented either face-to-face or online. Four practical tests were conducted across the semester with each consisting of four questions. Within each test, two questions were based on content delivered face-to-face, and two questions were based on content delivered online. Examination multiple choice questions were similarly divided and assessed. Findings indicate that student learning is consistent regardless of the mode of content delivery. However, student viewing habits had a significant impact on learning, with students who viewed videos multiple times achieving higher marks than those less engaged with the online content. Student comments also indicated that content delivery mode was not an influence on learning. Therefore student engagement, rather than the mode of content delivery, is a determinant of student learning and performance in human anatomy. Anat Sci Educ. © 2018 American Association of Anatomists., (© 2018 American Association of Anatomists.)
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- 2019
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229. Factors associated with recruiting adult survivors of childhood cancer into clinic-based research.
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Mertens AC, Liu W, Ness KK, McDonald A, Hudson MM, Wasilewski-Masker K, Bhatia S, Nathan PC, Leonard M, Srivastava K, Robison LL, and Green DM
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- Adult, Age of Onset, Child, Cohort Studies, Data Collection, Female, Humans, Male, Siblings, Motivation, Neoplasms, Patient Selection, Survivors psychology
- Abstract
Background: A high proportion of pediatric cancer patients are now surviving into adulthood, but are at increased risk for late morbidity and premature mortality related to their diagnosis and therapeutic exposures. Little is known about the potential success of recruiting adult survivors of childhood cancer into research projects that would require a risk-based health evaluation within a clinical setting., Procedures: Pediatric cancer survivors and siblings eligible for the current study were Childhood Cancer Survivor Study participants who lived within 100 miles of one of five Consortium for Pediatric Intervention Research institutions, regardless of where they were initially diagnosed and treated. A short survey was mailed to 829 survivors and 373 siblings to identify factors that predict interest, potential barriers, and motivators, to participation in research including a risk-based clinical evaluation., Results: Overall, 92% of survivors responding to the survey were very interested/interested in participating in a research study requiring a visit to a local hospital clinic. Siblings of survivors were less interested than survivors in participating in such a study, with only 78% indicating that they were very interested/interested. Potential motivators to participation included visiting their treating hospital and receiving health information. The primary barrier to participation was related to taking time off from work., Conclusions: This study demonstrates that a subgroup of survivors would be willing to return to a long-term follow-up center to participate in intervention-based research. Identified motivating factors and perceived barriers need to be considered in determining the feasibility, design and execution of future research., (© 2014 Wiley Periodicals, Inc.)
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- 2014
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230. α(1) adrenergic receptor agonist, phenylephrine, actively contracts early rat rib fracture callus ex vivo.
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McDonald SJ, Dooley PC, McDonald AC, Djouma E, Schuijers JA, Ward AR, and Grills BL
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- Animals, Biomechanical Phenomena, Bony Callus drug effects, Prazosin pharmacology, Rats, Receptors, Adrenergic, beta-2 drug effects, Terbutaline pharmacology, Adrenergic alpha-1 Receptor Agonists pharmacology, Bony Callus physiology, Fracture Healing drug effects, Phenylephrine pharmacology, Rib Fractures physiopathology
- Abstract
Early, soft fracture callus that links fracture ends together is smooth muscle-like in nature. We aimed to determine if early fracture callus could be induced to contract and relax ex vivo by similar pathways to smooth muscle, that is, contraction via α(1) adrenergic receptor (α(1) AR) activation with phenylephrine (PE) and relaxation via β(2) adrenergic receptor (β(2) AR) stimulation with terbutaline. A sensitive force transducer quantified 7 day rat rib fracture callus responses in modified Krebs-Henseliet (KH) solutions. Unfractured ribs along with 7, 14, and 21 day fracture calluses were analyzed for both α(1) AR and β(2) AR gene expression using qPCR, whilst 7 day fracture callus was examined via immunohistochemistry for both α(1) AR and β(2) AR- immunoreactivity. In 7 day callus, PE (10(-6) M) significantly induced an increase in force that was greater than passive force generated in calcium-free KH (n = 8, mean 51% increase, 95% CI: 26-76%). PE-induced contractions in calluses were attenuated by the α(1) AR antagonist, prazosin (10(-6) M; n = 7, mean 5% increase, 95% CI: 2-11%). Terbutaline did not relax callus. Gene expression of α(1) ARs was constant throughout fracture healing; however, β(2) AR expression was down-regulated at 7 days compared to unfractured rib (p < 0.01). Furthermore, osteoprogenitor cells of early fibrous callus displayed considerable α(1) AR-like immunoreactivity but not β(2) AR-like immunoreactivity. Here, we demonstrate for the first time that early fracture callus can be pharmacologically induced to contract. We propose that increased concentrations of α(1) AR agonists such as noradrenaline may tonically contract callus in vivo to promote osteogenesis., (Copyright © 2010 Orthopaedic Research Society.)
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- 2011
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231. Early fracture callus displays smooth muscle-like viscoelastic properties ex vivo: implications for fracture healing.
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McDonald SJ, Dooley PC, McDonald AC, Schuijers JA, Ward AR, and Grills BL
- Subjects
- Actins physiology, Animals, Elasticity, Male, Muscle Relaxation, Osteogenesis physiology, Rats, Rats, Sprague-Dawley, Viscosity, Bony Callus physiology, Fracture Healing physiology, Muscle, Smooth physiology
- Abstract
Cells of early, fibrous callus in bone fractures possess much alpha smooth muscle actin. This callus contracts and relaxes; however, active and passive components of its force production have yet to be defined. We aimed to establish whether passive viscoelastic properties of early soft fracture callus are smooth muscle-like in nature. Under anesthesia one rib was fractured in rats and calluses removed 7 days later for analysis. Urinary bladder detrusor muscle and Achilles tendon were also resected and analyzed. Force production in these tissues was measured using a force transducer when preparations were immersed in calcium-free Krebs-Henseleit solution (pH 7.4, 22 degrees C). Viscoelastic responses were measured in each preparation in response to 50 microN increases and decreases in force after achieving basal tissue tension by preconditioning. Callus, bladder, and tendon all displayed varying, reproducible degrees of stress relaxation (SR) and reverse stress relaxation (RSR) (n = 7 for all groups). Hysteresis was observed in callus, with the first SR response significantly larger than that produced in subsequent stretches (p < 0.05). Callus SR responses were greater than tendon (p < 0.001) but less than bladder (p < 0.001). Callus RSR responses were greater than tendon (p < 0.001), but no significant difference was seen between RSR of callus and bladder. We concluded that early, soft callus displayed significant SR and RSR phenomena similar to smooth muscle tissue, and SR and RSR may be important in maintenance of static tension in early callus by promoting osteogenesis and fracture healing., ((c) 2009 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.)
- Published
- 2009
- Full Text
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