title: Number of sexual partners and associations with initiation and intensity of substance use.
abstract: We dissected associations between initiation and intensity of substance use and number of sexual partners using pooled data from high school seniors (weighted n = 13,580) who participated in the 1999-2007 Youth Risk Behavior Surveillance System (YRBS), a cross-sectional, nationally representative survey. In multinomial multivariable logistic regressions, number of sexual partners steadily increased as substance use intensified from never use to experimental/new user to heavy use across all substances for both male and females. Severity of substance use is more closely related to, and thus a better indicator of, higher number of sexual partners than age of substance use onset.
authors.affiliation: Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA. rehgp@psychiatry.wustl.edu
authors.forename: Patricia A
authors.initials: PA
authors.lastname: Cavazos-Rehg
authors.forename: Melissa J
authors.initials: MJ
authors.lastname: Krauss
authors.forename: Edward L
authors.initials: EL
authors.lastname: Spitznagel
authors.forename: Mario
authors.initials: M
authors.lastname: Schootman
authors.forename: Linda B
authors.initials: LB
authors.lastname: Cottler
authors.forename: Laura Jean
authors.initials: LJ
authors.lastname: Bierut
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000208:ethnology / Q000523:psychology; D000428:Alcohol Drinking / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008385:Marijuana Smoking / Q000453:epidemiology; D012309:Risk-Taking; D012574:Schools; D012737:Sex Factors; D012725:Sexual Behavior / Q000208:ethnology / Q000523:psychology / Q000706:statistics & numerical data*; D012747:Sexual Partners; D012907:Smoking / Q000453:epidemiology; D014481:United States / Q000453:epidemiology