RESUMO Objetivo Examinar a frequência de fatores de risco comportamentais para doenças crônicas não transmissíveis, de forma isolada e agrupados, e sua associação com variáveis sociodemográficas em adolescentes. Métodos Participaram 1.039 adolescentes do ensino médio de escolas públicas e privadas, eleitas por conveniência, da região metropolitana do Rio de Janeiro. Os testes do Qui-quadrado, Teste U de Mann-Whitney e a regressão logística ordinal, bruta e ajustada, foram empregados para avaliar a associação entre as variáveis. Resultados Os fatores de risco mais frequentes foram o comportamento sedentário (68,8%), o uso de álcool (36,8%) e o excesso de peso (26,8%). A coocorrência dos fatores foi observada em 67,5% dos estudantes. Ser do sexo feminino (OR=1,28; IC95%=1,01–1,63), de cor branca (OR=1,35; IC95%=1,06–1,72) e de escola privada (OR=1,46; IC95%=1,12–1,88) aumentou a chance de coocorrência dos fatores. Houve maior chance de agrupamento dos comportamentos avaliados para tabagismo (OR=4,94; IC95%=1,46–16,75), uso de álcool (OR=1,43; IC95%=1,09–1,88), consumo elevado de alimentos ultraprocessados (OR=1,57; IC95%=1,19–2,07) e comportamento sedentário (OR=1,40; IC95%=1,07–1,82). Conclusão A proporção de adolescentes com coocorrência de fatores de risco comportamentais foi elevada principalmente para as meninas, adolescentes de cor branca e de escolas privadas, assim como entre aqueles que são tabagistas, fazem uso de álcool, apresentam consumo elevado de alimentos ultraprocessados e comportamentos sedentários.
ABSTRACT Objective To examine the prevalence of the behavioral risk factors – both isolated and clustered – for chronic diseases, among adolescents. Additionally, its association with various social and demographic variables was estimated. Methods This was a cross-sectional study conducted on 1,039 high school students, from public and private schools, elected for convenience, in Rio de Janeiro, Brazil. A Chi-square test, Mann-Whitney U test, as well as crude and adjusted ordinal logistic regression were used to assess the association between the variables. Results The most frequently observed risk factors were sedentary behavior (68.8%), alcohol consumption (36.8%), and overweight (26.8%). The clustering of risk factors was observed in 67.5% of the students. Being a girl (OR=1.28; 95%CI=1.01–1.63), Caucasian (OR=1.35; 95%CI=1.06–1.72) or private school student (OR=1.46; 95%CI=1.12–1.88) increased the chance of the clustering of risk factors. The co-occurrence of risk factors was predominantly observed in the case of smoking (OR=4.94; 95%CI=1.46–16.75), alcohol consumption (OR=1.43; 95%CI=1.09–1.88), high consumption of ultra-processed foods (OR=1.57; 95%CI=1.19–2.07), and sedentary behavior (OR=1.40; 95%CI=1.07–1.82). Conclusion The co-occurrence of behavioral risk factors was observed to be higher among girls, Caucasian adolescents, and private school students, as well as, among smokers, alcohol users and adolescents with sedentary habits and a high consumption of ultra-processed foods.