| Carried a weapon2,3 |
| Total | 22.1 | 20.0 | 18.3 | 17.3 | 17.4 | 17.1 | 16.7 | 17.3 | 16.5 |
| Male | 34.3 | 31.1 | 27.7 | 28.6 | 29.3 | 26.9 | 27.1 | 24.9 | 24.3 |
| Female | 9.2 | 8.3 | 7.0 | 6.0 | 6.2 | 6.7 | 5.5 | 9.8 | 8.5 |
| Drove after drinking alcohol2 |
| Total | 13.5 | 15.4 | 16.9 | 13.1 | 13.3 | 12.1 | 12.9 | 9.1 | 11.7 |
| Male | 17.6 | 18.5 | 21.0 | 17.4 | 17.2 | 15.0 | 15.2 | 13.4 | 14.9 |
| Female | 9.1 | 11.9 | 12.0 | 8.7 | 9.5 | 8.9 | 10.3 | 4.6 | 8.6 |
| Rode with a driver who had been drinking alcohol2 |
| Total | 35.3 | 38.8 | 36.6 | 33.1 | 30.7 | 30.2 | 28.5 | 30.9 | 36.4 |
| Male | 36.3 | 39.5 | 38.3 | 34.4 | 31.8 | 29.2 | 27.3 | 31.8 | 32.8 |
| Female | 34.5 | 37.8 | 34.5 | 31.7 | 29.6 | 31.1 | 29.8 | 29.8 | 40.0 |
| Carried a gun2 |
| Total | 7.9 | 7.6 | 5.9 | 4.9 | 5.7 | 6.1 | 5.9 | 6.0 | 5.4 |
| Male | 13.7 | 12.3 | 9.6 | 9.0 | 10.3 | 10.2 | 10.0 | 10.6 | 8.2 |
| Female | 1.8 | 2.5 | 1.5 | 0.8 | 1.3 | 1.6 | 1.5 | 1.4 | 2.6 |
| Engaged in a physical fight4 |
| Total | 41.8 | 38.7 | 36.6 | 35.7 | 33.2 | 33.0 | 30.5 | 39.7 | 36.1 |
| Male | 51.2 | 46.1 | 45.5 | 44.0 | 43.1 | 40.5 | 38.4 | 45.6 | 42.6 |
| Female | 31.7 | 30.6 | 26.0 | 27.3 | 23.9 | 25.1 | 22.1 | 34.0 | 29.5 |
| Injured in a physical fight4,5 |
| Total | 4.0 | 4.2 | 3.5 | 4.0 | 4.0 | 4.2 | 2.9 | 5.5 | 5.2 |
| Male | 5.2 | 5.7 | 4.6 | 5.3 | 5.2 | 5.7 | 4.0 | 7.3 | 6.5 |
| Female | 2.7 | 2.5 | 2.2 | 2.8 | 2.9 | 2.6 | 1.7 | 3.7 | 3.9 |
| Never or rarely wore a bicycle helmet4,6 |
| Total | 92.8 | 92.8 | 88.4 | 85.3 | 84.7 | 85.9 | 83.8 | 94.6 | 90.1 |
| Male | 92.2 | 93.3 | 88.4 | 86.7 | 86.3 | 87.2 | 85.2 | 95.0 | 91.4 |
| Female | 93.6 | 92.3 | 88.3 | 83.6 | 82.6 | 84.2 | 82.0 | 94.3 | 87.9 |
| 1Includes other race/ethnicity categories not separately shown. |
| 2One or more times during the 30 days preceding the survey. |
| 3Examples of a weapon are a gun, knife, or club. |
| 4One or more times during the 12 months preceding the survey. |
| 5Physical fight resulting in injury requiring attention by doctor or nurse. |
| 6Percentages based on those students who rode a bicycle in the past 12 months. |
| SOURCE: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, Morbidity and Mortality Weekly Report, Youth Risk Behavior Surveillance—United States, 1993, 1995, 1997, 1999, 2001, and 2003. |
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