Risk behaviors were related to social, economic and family factors and they tend to agglomerate.

The aim of this study was to investigate gaps between knowledge on HIV/AIDS and sexual behavior among teenagers. The study used a cross-sectional design with a representative random sample of 1,158 teenagers (14 to 19 years of age) enrolled in nine public secondary schools and who answered validated questionnaires. Data analysis included descriptive statistics and tests of hypotheses (chi-square, Mann-Whitney and Kruskal-Wallis, Kendall, and Fisher's exact test). The vast majority of the teenagers (98.7%) expressed doubt on at least one question. Condom use during first sexual intercourse was significantly associated with condom use in sexual relations in the previous six months. There was no statistical association between knowledge on HIV/AIDS and frequency of condom use or number of sexual partners. Health actions are needed that link schools to health services, in addition to not only elaborating appropriate information but also valorizing teenagers' individuality in the development of proposals.

The aim of this study was to investigate gaps between knowledge on HIV/AIDS and sexual behavior among teenagers. The study used a cross-sectional design with a representative random sample of 1,158 teenagers (14 to 19 years of age) enrolled in nine public secondary schools and who answered validated questionnaires. Data analysis included descriptive statistics and tests of hypotheses (chi-square, Mann-Whitney and Kruskal-Wallis, Kendall, and Fisher's exact test). The vast majority of the teenagers (98.7%) expressed doubt on at least one question. Condom use during first sexual intercourse was significantly associated with condom use in sexual relations in the previous six months. There was no statistical association between knowledge on HIV/AIDS and frequency of condom use or number of sexual partners. Health actions are needed that link schools to health services, in addition to not only elaborating appropriate information but also valorizing teenagers' individuality in the development of proposals.

RESUMO O uso de álcool impacta a morbimortalidade na adolescência. Assim, este estudo objetivou identificar a relação entre álcool, variáveis sociodemográficas e comportamentos de risco entre adolescentes do município de Belo Horizonte. Realizaram-se análise descritiva e testes de associação e regressão logística a partir dos dados do Estudo de Riscos Cardiovasculares na Adolescência (Erica). Foi encontrado um consumo de álcool por 22,1% dos adolescentes. Os resultados da análise multivariada revelaram que não usar o Anticoncepcional Oral (ACO) na última relação aumentou 3,5 vezes as chances de o adolescente fazer uso de bebida alcoólica (OR: 3,5 IC95% 2,49-4,91). Fumar aumentou 7,25 vezes as chances de o adolescente fazer uso de bebida alcóolica (OR: 7,25 IC95% 3,7-14,22). Adolescentes do sexo masculino possuem 1,47 vezes mais chances de consumir bebidas alcoólicas que as meninas (OR: 1,47 IC95% 1,14-1,89). O avançar da idade aumenta 1,36 vezes a chance de o adolescente fazer uso de álcool (OR:1,36 IC95% 22-1,51). Apresentar maior valor de proxy de riqueza aumentou 1,04 vezes a chance de o adolescente consumir bebida alcoólica (OR: 1,04 IC95% 1,01-1,07). Assim, conclui-se que as ações em saúde voltadas para a prevenção do consumo do álcool entre adolescentes devem contemplar as diferenças entre as classes sociais, o gênero e a idade, bem como a prevenção do tabagismo e a promoção da saúde sexual e reprodutiva.