Migration during the formative adolescent years can affect important life-course transitions, including the initiation of sexual activity. In this study, we use life history calendar data to investigate the relationship between changes in residence and timing of premarital sexual debut among young people in urban Kenya. By age 18, 64 percent of respondents had initiated premarital sex, and 45 p...

OBJECTIVE We analyzed early sexual activity among Hispanic 14 to 15-year-old adolescents residing in a poor neighborhood in Puerto Rico. METHODS Information from a sample of 325 adolescents was collected from a randomized sample of community households. Logistic regression analysis was used to identify the variables that help explained adolescents' sexual behavior. RESULTS Adolescents whose...

Thank you for reading and commenting on the paper that was recently published in ESC Heart Failure. Dr Koutsampasopoulos and colleagues comment on the role of ejection fraction (EF) in sexual function, and they question the appropriateness of not taking EF into account in the American Heart Association (AHA) scientific statement on sexual activity and cardiovascular disease in advising on or di...

The high level of HIV infection in sub-Saharan Africa has led to an increased interest in understanding the determinants of sexual activity among young people, who are at high risk of sexually transmitted infections. The present study examined sociodemographic, behavioral, and psychosocial factors associated with heterosexual activity among a sample of 3556 male and female high-school students ...

This cross-sectional study aimed to assess gender differences in adolescents in relation to onset of sexual activity. A total of 406 15-19-year-old adolescents from a family health unit in the city of São Paulo, Brazil, were interviewed from May to December 2002. Nearly half had already had their first sexual intercourse, at a mean age of 15, independently of gender. Sexual debut was usually un...