Condom use as a function of time in new and established adolescent sexual relationships

Am J Public Health. 2002 Feb;92(2):211-3. doi: 10.2105/ajph.92.2.211.


Objectives: This study sought to describe condom use over time in new and established adolescent relationships.

Methods: The outcome variable was time (in days) until first unprotected coital event. Analyses involved comparisons of Kaplan-Meier survival curves and Cox proportional hazards models.

Results: Survival functions for the 2 relationship groups were significantly different. However, by 21 days the curves had converged: 43% of new and 41% of established relationships involved no unprotected coital events. Time to first unprotected coital event was significantly longer in new than in established relationships.

Conclusions: Prolongation of condom use in ongoing relationships may be a useful intervention to prevent sexually transmitted diseases.

MeSH terms

  • Adolescent
  • Adolescent Behavior*
  • Adult
  • Condoms / statistics & numerical data*
  • Contraception Behavior*
  • Female
  • Humans
  • Indiana
  • Male
  • Proportional Hazards Models
  • Safe Sex*
  • Sexually Transmitted Diseases / prevention & control*
  • Statistics, Nonparametric
  • Survival Analysis
  • Time Factors