From the Centers for Disease Control. Weapon-carrying among high school students.
D000293:Adolescent; D000294:Adolescent Behavior; D003617:Dangerous Behavior; D005006:Ethnicity; D005260:Female; D005389:Firearms; D006708:Homicide / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D008297:Male; D012494:Sampling Studies; D012574:Schools; D013334:Students / Q000523:psychology*; D014481:United States / Q000453:epidemiology; D014754:Violence