Television viewing and risk of sexual initiation by young adolescents

Objective: To determine if television viewing is associated with the risk of initiating sexual intercourse in young adolescents. Design: Secondary analysis of data obtained from 1994 through 1996. Setting: The National Longitudinal Study of Adolescent Health. Participants: The 4808 students younger than 16 years whohadnot initiated intercourse before baseline interview. Exposures: Primary exposure was self-reported daily television watching, categorized as low (<2 hours) or high (<2 hours) use. Secondary exposure was parental regulation of television programming watched. Main Outcome Measure: Odds ratio for initiating intercourse by 1-year follow-up, adjusted for potential confounders. Results: At baseline, 2414 (48.8%) subjects watched television 2 or more hours per day. By 1-year follow-up, 791 (15.6%) subjects had initiated intercourse. Sexual initiation was associated with high television use (adjusted odds ratio, 1.35; 95% confidence interval, 1.01-1.79) and lack of parental regulation of television programming (adjusted odds ratio, 1.35; 95% confidence interval, 1.01-1.80). Most subjects (73.8%) reported strong parental disapproval of sex; their overall rate of initiation was 12.5%, and their risk was independently associated with high television use (adjusted odds ratio, 1.72; 95% confidence interval, 1.24-2.40) and lack of parental regulation of television programming (adjusted odds ratio, 1.35; 95% confidence interval, 1.01-1.81). Among adolescents who did not report strong parental disapproval, the rate of sexual initiation was higher (24.1%) but unrelated to television use. Conclusion: Among young adolescents who reported strong parental disapproval of sex, watching television 2 or more hours per day and lack of parental regulation of television programming were each associated with increased risk of initiating sexual intercourse within a year.