title: "Sex isn't something you do with someone you don't care about": young women's definitions of sex.
abstract: OBJECTIVE
  How young women define sexual intercourse has implications for their sexually transmitted infection (STI) risk. This study investigated young women's (1) definitions of sex, (2) understanding of a unique sex event, and (3) definitions of when a sex event begins and ends.
  
  
  METHODS
  Using semi-structured interviews, young women were asked to define sex, define when a sex event began and ended, and were asked whether they thought their partners would agree. Interview transcripts were analyzed using thematic analysis.
  
  
  METHODS
  Participants were recruited from an urban adolescent health clinic in the Northeastern United States.
  
  
  METHODS
  Twenty-four heterosexual, sexually active young women contributed data for analysis.
  
  
  METHODS
  None.
  
  
  RESULTS
  Young women's definitions of sex varied. Some included anal and oral sex while others did not. Time between sex events, new condom use, and new erection were used to define unique sex events. Some believed sex began with foreplay. Others believed sex began when the penis entered the vagina. Some believed sex ended when the penis was withdrawn from the vagina. Others believed sex ended with orgasm for one or both partners. Young women talked about the influence of relationship type on their definitions of sex.
  
  
  CONCLUSIONS
  Variations in young women's definitions of sex may influence their responses to clinical questions about sexual activity and their understanding of their STI risk. As such, our findings have important implications for clinical counseling regarding sexual behavior and correct condom use and for researchers investigating young women's sexual behavior.
authors.affiliation: Division for Adolescent/Young Adult Medicine, Children's Hospital Boston, Boston, MA, USA. clare.mehta@childrens.harvard.edu
authors.forename: C M
authors.initials: CM
authors.lastname: Mehta
authors.forename: L E
authors.initials: LE
authors.lastname: Sunner
authors.forename: S
authors.initials: S
authors.lastname: Head
authors.forename: R
authors.initials: R
authors.lastname: Crosby
authors.forename: L A
authors.initials: LA
authors.lastname: Shrier
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D007407:Interviews as Topic; D012725:Sexual Behavior / Q000523:psychology*; D012747:Sexual Partners; D014481:United States; D055815:Young Adult