title: The roles of abstinence and contraception in declining pregnancy rates.
authors.forename: Joshua R
authors.initials: JR
authors.lastname: Mann
authors.forename: Curtis
authors.initials: C
authors.lastname: Stine
mesh_terms: D000293:Adolescent; D000328:Adult; D001723:Birth Rate; D003075:Coitus; D003268:Contraception Behavior / Q000208:ethnology / Q000523:psychology / Q000639:trends*; D003271:Contraceptive Agents, Female / Q000627:therapeutic use*; D005191:Family Characteristics; D005260:Female; D006801:Humans; D011159:Population Surveillance; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000208:ethnology / Q000517:prevention & control / Q000706:statistics & numerical data*; D011336:Probability; D018570:Risk Assessment; D012307:Risk Factors; D040242:Risk Reduction Behavior; D012746:Sexual Abstinence / Q000208:ethnology / Q000523:psychology / Q000706:statistics & numerical data*; D014481:United States
chemical_list: D003271:Contraceptive Agents, Female