title: Trends in teen sexual behavior.
authors.forename: D J
authors.initials: DJ
authors.lastname: Besharov
authors.forename: K N
authors.initials: KN
authors.lastname: Gardiner
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000569:Americas; D001519:Behavior; D003267:Contraception; D003268:Contraception Behavior; D003625:Data Collection; D003710:Demography; D019049:Developed Countries; D005193:Family Planning Services; D005298:Fertility; D015438:Health Behavior; D007086:Illegitimacy; D009656:North America; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D012309:Risk-Taking; D012494:Sampling Studies; D012725:Sexual Behavior; D014481:United States
keywords: Adolescents; Age Factors; Americas; Behavior; Contraception; Contraceptive Usage; Demographic Factors; Developed Countries; Family Planning; Fertility; North America; Northern America; Population; Population Characteristics; Population Dynamics; Premarital Pregnancy; Reproductive Behavior; Research Methodology; Research Report; Risk Behavior; Risk Reduction Behavior; Sampling Studies; Sex Behavior; Studies; Surveys; United States; Youth