"Best Bets" to Prevent Contracting STDs:
Make Contraceptives Accessible and Easy to Use

In addition, an analysis of four condom-availability programs in schools (all of which had quasi-experimental designs), showed inconsistent impacts on condom use - two programs showed increased condom use, one showed no effect, and one was associated with reduced condom use (Kirby, 2001). However, in absence of experimental design, no concrete conclusions can be made about these types of programs.