Adolescent sexual activity.
D000293:Adolescent; D000367:Age Factors; D000569:Americas; D001290:Attitude; D001519:Behavior; D003710:Demography; D019049:Developed Countries; D009656:North America; D010551:Personality; D011153:Population; D011154:Population Characteristics; D011584:Psychology; D012725:Sexual Behavior; D019529:Sexuality; D014481:United States
Adolescents; Age Factors; Americas; Attitude; Behavior; Demographic Factors; Developed Countries; Literature Review; North America; Northern America; Personality; Population; Population Characteristics; Psychological Factors; Sex Behavior; Sexuality; United States; Youth