title: [Validity and reliability of a questionnaire to asses the social, corporal, and sexual behaviors among school adolescents].
abstract: OBJECTIVE
  To validate a self-administered questionnaire about social and corporal sexual behaviors among adolescents, by school level and gender.
  
  
  METHODS
  The data collection instrument was constructed according to DeVellis and consisted of 26 items. It was used in a prospective longitudinal study conducted in 1994 in Guadalajara, Mexico, among 1243 secondary and high school students. The construct validity of the instrument was established using exploratory factorial analysis, and its reliability using the Cronbach's alpha test.
  
  
  RESULTS
  Five factors were obtained in males and an equal number in women, using eigenvalues > 1 and by forcing the best solution. The explained variance was 59.3-70.6%; the factorial weight average was 0.63-0.75, and 13 different factors were selected. The Cronbach's alpha mean was 0.87-0.93 and 16 factors had Cronbach's alpha over 0.70.
  
  
  CONCLUSIONS
  The instrument has an acceptable validity and reliability for studying the sexual, social, and corporal behaviors in adolescents similar populations.
authors.affiliation: Unidad de Investigación Epidemiológica y en Servicios de Salud del Adolescente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México. ahidalgo@udgserv.cencar.udg.mx
authors.forename: Alfredo
authors.initials: A
authors.lastname: Hidalgo-San Martín
authors.forename: Ramiro
authors.initials: R
authors.lastname: Caballero-Hoyos
authors.forename: Alfredo
authors.initials: A
authors.lastname: Celis-de la Rosa
authors.forename: Bettylu
authors.initials: B
authors.lastname: Rasmussen-Cruz
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D000297:Psychology, Adolescent / Q000295:instrumentation*; D015203:Reproducibility of Results; D012725:Sexual Behavior / Q000523:psychology*; D012919:Social Behavior; D011795:Surveys and Questionnaires