Validity studies of a self-administered health questionnaire for secondary school students.
D000293:Adolescent; D005006:Ethnicity; D005260:Female; D006262:Health; D006801:Humans; D008297:Male; D008396:Maryland; D010808:Physical Examination; D012572:School Health Services; D012737:Sex Factors; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D011795:Surveys and Questionnaires