Analysis of Korean adolescents’ sexual experience and substance use

We investigated the relationship between Korean adolescents’ sexual experience—including, kissing, petting, and sexual intercourse—and their alcohol consumption and use of illegal drugs and tobacco. We analyzed data taken from the responses of 74,186 adolescents who had participated in the 2012 Korean Youth Health Behavior Online Survey. Variables regarding sexual experiences, experience of contraception, and substance and alcohol use were extracted and analyzed using descriptive statistics, chi-square tests, and logistic regression. The results showed that fewer than 30% of the respondents reported always using contraception, and almost half reported rarely using contraception. The number of boys and girls reporting having had sexual experiences increased from 2 to 4 times when they also reported use of illicit drugs, smoking tobacco, or alcohol consumption. The results highlight a need for school-based sex education supported by a national policy and the provision of basic resources to reduce the incidence of unprotected sex and to improve healthy behavior of adolescents.