Abstract

Background: The predetermined gender roles and the emphasis on reproductive responsibility on women, excluding men, have negative consequences on their sexual reproductive health and satisfactory sexual practices. Aim: To describe and analyze changes in sexual practices and gender differences in adolescents of the lower-middle socioeconomic level, users of public health system who started their sexual activity. Material and methods: We studied 4,971 adolescents of both sexes aged between 12 and 19 years, who consulted in a clinic for adolescents between the years 1990 and 2005. Several variables related to adolescent sexuality were considered. Uni and bivariate analysis were carried out and a model of stratified lineal regression per sex was fixed to explain the following variables: age at which sexual activity is initiated, number of sexual partners, time period between start of dating and the start of sexual activity along time. Results: The average age when men and women start their sexual activity was 15.7 and 15.5years, respectively. Along years and among women but not men, there was a reduction in the age of start of sexual activity and an increase in the number of sexual partners. The mean