HEALTH STUDIES--PRESUMABLY NORMAL HIGH SCHOOL STUDENTS. II. ABSENCE FROM SCHOOL.
D000041:Absenteeism; D000293:Adolescent; D005260:Female; D005767:Gastrointestinal Diseases; D006801:Humans; D008599:Menstruation Disturbances; D009141:Musculoskeletal System; D010414:Pennsylvania; D012141:Respiratory Tract Infections; D012572:School Health Services; D012574:Schools; D012621:Seasons; D013223:Statistics as Topic; D013334:Students
ABSENTEEISM; ADOLESCENCE; GASTROINTESTINAL DISEASES; MENSTRUATION DISORDERS; MUSCULOSKELETAL SYSTEM; PENNSYLVANIA; RESPIRATORY TRACT INFECTIONS; SCHOOL HEALTH; SEASONS; STATISTICS