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Fatores de risco cardiovascular em adolescentes de município do sul do Brasil: prevalência e associa??es com variáveis sociodemográficasDOI: 10.1590/S1415-790X2011000100004 Keywords: risk factors, cardiovascular diseases, prevalence, atherosclerosis, adolescent health. Abstract: objective: to determine the prevalence of cardiovascular risk factors and analyze their association with sociodemographic variables among adolescents from the town três de maio, state of rio grande do sul. methods: cross-sectional and school-based study with a probabilistic sample method, stratified by sex and economic level, comprised of 660 14 to 19 year-old adolescents, 343 girls (52%). we investigated behavioral (inactivity, atherogenic diet, smoking) and biological (overweight and excess abdominal adiposity, prehypertension/hypertension, hyperglycemia and dyslipidemias) risk factors and their association with sociodemographic variables (gender, age and economic level). associations were tested using the chi-square test and prevalence ratio (95% confidence interval) among risk factors and sociodemographic variables. results: the most prevalent cardiovascular risk factors were: atherogenic diet (98.3%), inactivity (61.2%), increased abdominal adiposity (32.6%), low high-density lipoprotein (25.9%), and increased total cholesterol (20.3%). significant associations were found between being female and sedentary [prevalence ratio (pr) = 1.33 (1.17 - 1.50)], excess abdominal fat [pr = 2.44 (1.89 - 3.16)] and high total cholesterol [rp = 1.89 (1.36 - 2.62)]; and, between males and low levels of high density lipoprotein [rp = 2.22 (1.67 - 2.94)] and prehypertension/hypertension [rp = 4.87 (1.67 - 14.23)]. there was also an association between the 17 to 19 age group and smoking [or = 1.84 (1.05 - 3.22)] and blood prehypertension/hypertension [rp = 3.36 (1.43 - 7.90)]. economic level was not associated with cardiovascular risk factors in our sample. conclusion: the results indicate the need for interventions that promote a healthy lifestyle, with emphasis on adopting a healthy diet and increasing levels of physical activity.
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