Trends in sexual behavior among high school students in the United States: the Youth Risk Behavior Survey.
D000293:Adolescent; D000367:Age Factors; D000569:Americas; D001519:Behavior; D001695:Biology; D003267:Contraception; D003268:Contraception Behavior; D003625:Data Collection; D003710:Demography; D019049:Developed Countries; D004194:Disease; D004493:Education; D005193:Family Planning Services; D015658:HIV Infections; D015438:Health Behavior; D007239:Infections; D009656:North America; D011153:Population; D011154:Population Characteristics; D012106:Research; D012307:Risk Factors; D012309:Risk-Taking; D012494:Sampling Studies; D012574:Schools; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases; D013334:Students; D014481:United States; D014777:Virus Diseases
Adolescents; Age Factors; Americas; Behavior; Biology; Contraception; Contraceptive Usage; Demographic Factors; Developed Countries; Diseases; Education; Family Planning; Hiv Infections; Infections; North America; Northern America; Population; Population Characteristics; Premarital Sex Behavior; Reproductive Tract Infections; Research Methodology; Risk Behavior; Risk Factors; Risk Reduction Behavior; Sampling Studies; Schools; Secondary Schools; Sex Behavior; Sexually Transmitted Diseases; Students; Studies; Surveys; United States; Viral Diseases; Youth