From the Centers for Disease Control. Safety-belt and helmet use among high school students--United States, 1990.
D000063:Accidents, Traffic / Q000706:statistics & numerical data; D000293:Adolescent; D000294:Adolescent Behavior; D000328:Adult; D005006:Ethnicity; D005260:Female; D006260:Head Protective Devices / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D015995:Prevalence; D012309:Risk-Taking; D012622:Seat Belts / Q000706:statistics & numerical data*; D014481:United States / Q000453:epidemiology; D014947:Wounds and Injuries / Q000453:epidemiology