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Objectives: Home environment may influence children's health behaviors associated with obesity. In this study, we examined home environment factors associated with diet and physical activity behaviors of overweight or obese youth. Methods: We analyzed baseline data from child and parent/caregiver dyads enrolled in an urban family weight management program. Multivariable logistic regression examined how home environment (parenting practices, family meal habits, and home availability of fruits/vegetables, sugar-sweetened beverages (SSBs), screen media, and physical activity resources) are related to children's intake of fruit, vegetables, and SSBs, and moderate-vigorous physical activity and sedentary time (ST) after adjusting for potential confounders. Results: Children were more likely to consume fruit if their families frequently ate meals together and infrequently watched TV during meals, and more likely to consume vegetables with high fruit/vegetable availability and low SSB availability. Children were more likely to engage in ST if parents practiced monitoring and frequently watched TV during meals. Conclusions: Overweight or obese children appear to have healthier habits if their families eat meals together without watching TV and if healthy food choices are available in the home. Encouraging parents to focus these practices may promote healthier body weight in children. [ABSTRACT FROM AUTHOR]

Women in the US continue to be affected by HIV through heterosexual contact. Sexual risk behaviors among women have been associated with a syndemic, or a mutually reinforcing set of conditions, including childhood sexual abuse (CSA), depression, substance use, violence, and financial hardship. Baseline data from a cohort of women with and at-risk for HIV (N = 620; 52% HIV+) were analyzed with Poisson regression to assess evidence for additive, independent and interactive effects among syndemic conditions in relation to reported sexual risk behaviors (e.g., unprotected and transactional sex) over the past 6 months, controlling for age and HIV status. The number of syndemic conditions was incrementally associated with more types of sexual risk behaviors. For example, women with all five syndemic conditions reported 72% more types of risk behaviors over 6 months, as compared to women without any syndemic conditions. Compared to women with no syndemic conditions, women with three syndemic conditions reported 34% more and women with one syndemic condition reported 13% more types of risk behaviors. Endorsing substance use in the past 6 months, reporting CSA, and experiencing violence as an adult were independently associated with 49%, 12%, and 8% more types of risk behaviors, respectively compared to women without these conditions. Endorsing both substance use and violence was associated with 27% more types of risk behaviors. These associations were not moderated by HIV status. Understanding specific relationships and interactions are needed to more effectively prioritize limited resources in addressing the psychosocial syndemic associated with sexual risk behavior among women with and at-risk for HIV. Our results identify interrelated psychosocial factors that could be targeted by intervention studies aiming to reduce high-risk sex in this population. [ABSTRACT FROM AUTHOR]

Since 2012, US guidelines have recommended against prostate-specific antigen (PSA) screening for prostate cancer. However, evidence of screening benefit from the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening trial and the European Randomized Study of Screening for Prostate Cancer has been inconsistent, due partly to differences in noncompliance and contamination. Using system dynamics modeling, we replicated the PLCO trial and extrapolated follow-up to 20 years. We then simulated 3 scenarios correcting for contamination in the PLCO control arm using Surveillance, Epidemiology, and End Results (SEER) incidence and survival data collected prior to the PSA screening era (scenario 1), SEER data collected during the PLCO trial period (1993-2001) (scenario 2), and data from the European trial's control arm (1991-2005) (scenario 3). In all scenarios, noncompliance was corrected using incidence and survival rates for men with screen-detected cancer in the PLCO screening arm. Scenarios 1 and 3 showed a benefit of PSA screening, with relative risks of 0.62 (95% confidence interval: 0.53, 0.72) and 0.70 (95% confidence interval: 0.59, 0.83) for cancer-specific mortality after 20 years, respectively. In scenario 2, however, there was no benefit of screening. This simulation showed that after correcting for noncompliance and contamination, there is potential benefit of PSA screening in reducing prostate cancer mortality. It also demonstrates the utility of system dynamics modeling for synthesizing epidemiologic evidence to inform public policy. [ABSTRACT FROM AUTHOR]

ABSTRACT BACKGROUND HealthCorps provides school wellness programming using curricula to promote changes in nutrition, mental health, and physical activity behaviors. The research objective was to evaluate effects of implementing its curricula on nutrition, mental health, and physical activity knowledge and behavior. METHODS Pre- and postsurvey data were collected (N = 2255) during the 2012-2013 academic year from 14 New York City public high schools. An 18-item knowledge questionnaire addressed 3 domains; 26 behavioral items were analyzed by factor analysis to identify 6 behavior domains, breakfast being a seventh 1-item domain. We examined the effects stratified by sex, applying mixed-effects models to take into account clustering effects of schools and participants adjusted for age. RESULTS The HealthCorps program significantly increased all 3 knowledge domains (p < .05), and significantly changed several key behavioral domains. Boys significantly increased fruits/vegetables intake (p = .03). Girls increased acceptance of new fruits/vegetables (p = .03) and breakfast consumption (p = .04), and decreased sugar-sweetened beverages and energy dense food intake (p = .03). The associations between knowledge and behavior were stronger in boys than girls. CONCLUSION The HealthCorps program significantly increased participants' knowledge on nutrition, mental health, and physical activity. It also improved several key behavioral domains, which are targets of the 2010 Dietary Guidelines to address obesity in youth. [ABSTRACT FROM AUTHOR]