From the Centers for Disease Control and Prevention. Neighborhood safety and the prevalence of physical inactivity--selected states, 1996.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008396:Maryland; D008875:Middle Aged; D009009:Montana; D009820:Ohio; D010414:Pennsylvania; D010809:Physical Fitness; D012111:Residence Characteristics / Q000706:statistics & numerical data; D012306:Risk; D012449:Safety / Q000706:statistics & numerical data; D012959:Socioeconomic Factors; D014768:Virginia