Adolescent sexual behaviour: results from an Ontario sample. Part II: Adolescent use of protection.

This paper reports the frequency of use of protection and rates of birth control pill/condom use by age and gender among a large, sexually active group of Ontario adolescents who were followed from 12 to 17 years of age. The sample consisted of the 759 males and 690 females who reported engaging in sexual intercourse during the McMaster Teen Project. Significantly more females aged 15-17 years reported always using a method of protection, and using the birth control pill. Condom use was more frequent among males at all ages, but reached statistical significance at ages 12, 13 and 17 years. Although the numbers reporting no use of protection decreased with age, by 17 years 36% of males and 33% of females continued to report no use of protection. Large numbers of sexually active Ontario adolescents continue to be vulnerable to pregnancy, STDs and AIDS.