The Effectiveness of Sexual Education in Schools on Teenagers' Sexual Behaviour. A Randomized Prospective Study, 1991.

The aim of the project was to find the causes of use of contraception and to study the effect of sex education at school and how this influence youths use of contraception. It was conducted an intervention study which consisted of two days of sex education. A questionnaire was filled out before and after the class, and also twelve months after the sex education had taken place. A control group who didn't attend the sex education also filled out the questionnaire. The questionnaire contained questions about sexual habits and experience, substance use, spare time, friends, knowledge about sexually transmitted infection (STI), contraception etc.