Adolescent sexual behavior in two ethnic minority groups: a multisystem perspective.

Adolescents are at high risk for a number of negative health consequences associated with early and unsafe sexual activity, such as infection with HIV and other sexually transmitted diseases, as well as unintended pregnancy. In the present study, a multisystem model was applied to one adolescent sexual behavior, penile-vaginal intercourse. Nine hundred seven Black and Hispanic adolescents (aged 14 to 17 years) and their mothers were interviewed. Factors from three systems (self, family, and extrafamilial) that are influential in the lives of adolescents were evaluated using four outcome measures. Factors from most or all systems emerged as predictors of each outcome measure. A cumulative risk index suggested a linear relationship between the number of systems identified as being at risk and indicators of adolescent sexual behavior. The implications for prevention are discussed.