Sexuality education: it can reduce unprotected intercourse.
D000163:Acquired Immunodeficiency Syndrome; D000293:Adolescent; D000367:Age Factors; D000569:Americas; D001519:Behavior; D003142:Communication; D003479:Curriculum; D003657:Decision Making; D003710:Demography; D019049:Developed Countries; D004194:Disease; D004493:Education; D005069:Evaluation Studies as Topic; D015658:HIV Infections; D006285:Health Planning; D006287:Health Planning Guidelines; D019359:Knowledge; D009656:North America; D009934:Organization and Administration; D011153:Population; D011154:Population Characteristics; D018570:Risk Assessment; D012736:Sex Education; D014481:United States; D014777:Virus Diseases
Acquired Immunodeficiency Syndrome--prevention and control; Adolescents; Age Factors; Americas; Behavior; Communication; Curriculum; Decision Making; Demographic Factors; Developed Countries; Diseases; Education; Evaluation; Hiv Infections--prevention and control; Knowledge; North America; Northern America; Organization And Administration; Population; Population Characteristics; Program Design; Programs; Recommendations; Risk Assessment; Sex Education; United States; Viral Diseases; Youth