title: Test-retest reliability in population research.
mesh_terms: D000293:Adolescent; D001741:Black or African American; D000367:Age Factors; D001290:Attitude; D002410:Catholicism; D004219:District of Columbia; D005190:Family; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D011153:Population; D011158:Population Growth; D012106:Research; D012737:Sex Factors; D012963:Sociometric Techniques; D013223:Statistics as Topic; D011795:Surveys and Questionnaires