title: [Age at menarche and first sexual intercourse. A cross-sectional study of 17-year old Danish women].
abstract: The age at menarche and first intercourse was analyzed from data obtained from a questionnaire sent to 1500 17 year-old randomly selected Danish women (76% responded). The average age at menarche was 13.37 years (SD: 1.24). The median age at the time of the first intercourse was 16.6 years. Late sexual debut was observed for girls who were relatively old at menarche and for those with a higher level of education. Apparently the age at menarche and at first sexual intercourse has not changed significantly in recent years.
authors.affiliation: Aarhus Universitet, Institut for Almen Medicin.
authors.forename: S B
authors.initials: SB
authors.lastname: Larsen
authors.forename: J
authors.initials: J
authors.lastname: Kragstrup
mesh_terms: D000293:Adolescent; D000367:Age Factors; D003075:Coitus; D003430:Cross-Sectional Studies; D003718:Denmark; D005260:Female; D006801:Humans; D008572:Menarche; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires