Evaluation of a pregnancy prevention program for urban teenagers.
D000293:Adolescent; D003268:Contraception Behavior; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008396:Maryland; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012572:School Health Services; D014505:Urban Population