Population-Based Study of Tobacco Use Among People Living With HIV in Puerto Rico.

BACKGROUND: Despite substantial advances in the era of highly active antiretroviral therapy, HIV-positive persons are at high risk of tobacco-related disease and mortality. This study describes the prevalence and sociodemographic factors associated with current tobacco use among HIV-positive men and women 18 years and older receiving HIV care in Puerto Rico. METHODS: Data from the 2009 Medical Monitoring Project (MMP) was used. A three-stage sampling design was conducted to obtain annual cross-sectional probability samples of HIV-infected adults in care. Factors associated with current tobacco use were identified using logistic regression models. All analyses were performed using STATA version 11.0. RESULTS: The estimated prevalence of current cigarette use among the population was 29.0% (95%CI: 23.5%-35.2%), daily smoking was reported in 76.7% of them. Multivariate logistic regression models, showed that male drug users (injected and noninjected) were up to nine times more likely to be current smokers (OR = 9.9; 95%CI = 3.1, 31.5) as compared to nonusers. CONCLUSION: Findings highlight the need for smoking cessation strategies in this population, particularly among male HIV+ drug users.

Participation in vigorous sports, not moderate sports, is positively associated with cardiorespiratory fitness among adolescent girls.

BACKGROUND: There is controversy regarding whether moderately-intense sports can improve physical fitness, which declines throughout adolescence among girls. The objective was to estimate the association between moderate and vigorous sports participation and cardiorespiratory fitness in a racially diverse sample of adolescent girls. METHODS: Cardiorespiratory fitness was measured using a modified physical work capacity test in 1029 eighth-grade girls participating in the Trial of Activity for Adolescent Girls. Girls reported sports in which they participated in the last year on an organized activity questionnaire. Using general linear mixed models, the study regressed absolute and relative fitness on the number of vigorous and moderate sports in which girls participated, race/ethnicity, age, treatment group, fat mass, fat-free mass, and an interaction between race and fat-free mass. RESULTS: The number of vigorous sports in which girls participated was positively associated with absolute fitness (ß = 10.20, P = .04) and relative fitness (ß = 0.17, P = .04). Associations were reduced, but not eliminated, after controlling for MET-weighted MVPA. Participation in moderate sports was not associated with either fitness measure. CONCLUSIONS: Vigorous sports participation is positively associated with cardiorespiratory fitness. Future longitudinal research should analyze whether promoting vigorous sports at an early age can prevent age-related declines in cardiorespiratory fitness among adolescent girls.

Case-case study of factors associated to hMLH1, hMSH2, and hMSH6 protein expression among endometrial cancer patients of the University District Hospital of San Juan, Puerto Rico.

UNLABELLED: Lynch syndrome (LS) is an autosomal dominant disorder caused by DNA mismatch repair (MMR) system deficiencies. Women affected by LS present a 40% to 60% lifetime risk of endometrial cancer (EC). OBJECTIVE: This case-case study aims to determine the frequency of the hMLH1, hMSH2, and hMSH6 MMR proteins and the factors (age, family history of cancer [FHC] related to LS, and body mass index [BMI]) associated to their absence in EC patients attending the University District Hospital of San Juan, Puerto Rico. MATERIALS AND METHODS: Twenty cases were preliminary evaluated for the MMR protein expression by immunohistochemistry testing and classified as positive cases (presence of protein) or negative cases (absence of protein). The statistical analysis was based on the logistic regression model using the maximum likelihood estimation (MLE). The Bayesian approach was used to determine the posterior probability (posterior Pr[odds ratio {OR} > 1]). RESULTS: Results showed absence for at least 1 MMR protein in 25% of the cases, 15% for hMLH1, and 10% for hMSH2. None of the cases showed an absence for hMSH6. The MLE demonstrated that women diagnosed with EC before the age of 50 (OR: 12.4; 95% confidence interval [CI] = 0.5-322.7), having FHC related to LS (OR: 17.7; 95% CI = 0.6-534.6), and having lower BMI (OR: 2.38; 95% CI = 0.39-14.28) present higher odds than their counterparts of lacking an MMR protein, once adjusted for potential predictors (P > 0.05). The posterior probability that an excess risk of lacking an MMR protein occurs was 95% or greater for each predictor. CONCLUSIONS: Our study in this Hispanic population supports previous studies in that younger age, FHC, and lower BMI are associated with increased odds of having an absence of MMR protein expression. Further studies with larger sample sizes should be performed.

Clinic-based case-control study of the association between body mass index and endometrial cancer in Puerto Rican women.

BACKGROUND: Obesity is an established risk factor for endometrial cancer (EC). This association, however, has not been studied in Puerto Rico, where overweight and obesity have reached epidemic levels (38% and 26%, respectively). METHODS: A hospital based case-control study was designed to evaluate the association between body mass index (BMI) and EC in women older than 21 years of age. Seventy-four prevalent EC cases diagnosed between January 2004 and August 2007 and a random sample of 88 healthy controls were recruited from gynecology clinics of the Medical Sciences Campus, University of Puerto Rico. Demographic, reproductive, lifestyle, and clinical information was obtained via structured telephone interviews and medical chart review. Unconditional logistic regression models were used to estimate adjusted odds ratios (OR) and 95% confidence intervals (CI). RESULTS: A significant trend was observed between BMI and EC in bivariate analyses (p < 0.05). Results showed that overweight (25.0 > BMI < 29.9 kg/m2) (OR = 4.4, 95% CI = 1.6-12.3) and obese (BMI < or = 30 kg/m2) (OR = 9.9, 95% CI = 3.6-26.9) women were more likely to have EC when compared to non-obese women. In multivariate analysis, obese women had a 4-fold greater possibility of EC (OR = 4.1; 95% CI: 1.8-8.6) than nonobese women, after adjusting for age, education, employment status, hypertension and diabetes diagnosis, use of oral contraceptives and consumption of poultry. CONCLUSION: Consistent with previous studies worldwide, adult obesity was a strong predictor for EC in this sample of Puerto Rican women. Thus, cancer control strategies should promote weight reduction strategies to reduce disease risk in this population.

A longitudinal study of sedentary behavior and overweight in adolescent girls.

The aim of this study is to examine sedentary and light activity in relation to overweight in adolescent girls. Adolescent girls were randomly recruited from 36 schools participating in the Trial of Activity for Adolescent Girls (TAAG). Assessments included age, ethnicity, socioeconomic status, and body composition estimated from weight, height, and triceps skinfold. Sedentary and light activity was measured for 6 days using accelerometry in 6th and in 8th grade among two randomly sampled cross-sections of girls. Sedentary activity increased from the 6th to 8th grade by 51.5 min/day. In the 8th grade, a significantly higher number of hours in sedentary activity for each of the 6-days of measurement were evident with higher tertiles of percent body fat (30-35%, >35% fat) (P < 0.05), but not across all increasing tertiles of BMI (5th to 85th, 85th to 95th, and >95th percentiles). The increase in sedentary activity was observed on weekdays, but not on weekends for percent body fat tertiles. In the cohort of girls measured in both 6th and 8th grades, the mean cross-sectional coefficient estimates were significant for percent body fat, but not BMI for sedentary and light activities. Adolescent girls from the 6th to 8th grade are shifting their time from light to more sedentary activity as measured by accelerometers. In addition, the increase in sedentary activity is not associated with an adverse effect on BMI or percent body fat. The eventual impact of this shift to a more sedentary lifestyle on body composition and other outcomes needs to be evaluated further.