Table 1 Characteristics of the study population of United States High School students in the Youth Risk Behavior Survey 2005
From: Variables associated with physical fighting among US high-school students
Characteristics | Total | Males | Females |
|---|---|---|---|
Ethnicity | Â | Â | Â |
Age (years) | n (%) | n (%) | n (%) |
All | 13857 (100) | 7193 (51.9) | 6664 (48.1) |
   ≤ 14 | 1221 (8.8) | 701 (9.8) | 520 (7.8) |
   15 | 3170 (23.9) | 1720 (23.9) | 1450 (21.6) |
   16 | 3535 (25.5) | 1817 (25.3) | 1718 (25.8) |
   17 | 3661 (26.4) | 1881 (26.2) | 1780 (26.7) |
   18+ | 2270 (16.4) | 1074 (14.8) | 1196 (18.0) |
Ethnicity | Â | Â | Â |
   White | 6117 (50.5) | 3015 (51.7) | 3102 (49.3) |
   American Indian or Alaska Native | 144 (1.2) | 86 (1.6) | 58 (0.9) |
   Asian | 366 (3.1) | 366 (3.2) | 179 (2.8) |
   Blacks | 3343 (27.6) | 1574 (27.0) | 1768 (28.1) |
   Native Hawaii or other Pacific Islander | 90 (0.7) | 44 (0.7) | 46 (0.7) |
   Hispanics | 2063 (17.3) | 920 (15.8) | 1143 (18.2) |
Cigarette smoking in the last 30 days | Â | Â | Â |
   No | 10374 (77.0) | 4808 (77.0) | 5566 (77.0) |
   Yes | 2856 (23.0) | 1490 (23.0) | 1366 (23.0) |
Alcohol use in the last 30 days | Â | Â | Â |
   No | 7434 (56.7) | 3428 (56.2) | 4006 (57.2) |
   Yes | 5751 (43.3) | 2841 (43.8) | 2910 (42.8) |
Ever used illegal drugs | Â | Â | Â |
   No | 7225 (54.0) | 3212 (54.3) | 4013 (57.8) |
   Yes | 6228 (46.0) | 3210 (45.7) | 3018 (42.2) |
Property stolen or deliberately damaged on school property in the last 12 months | Â | Â | Â |
   No | 9699 (70.3) | 4538 (68.6) | 5161 (72.0) |
   Yes | 41.32 (29.7) | 2105 (31.4) | 2027 (28.0) |
Threatened or injured with a weapon on school property in the last 12 months | Â | Â | Â |
   No | 12755 (92.1) | 6000 (90.0 | 6755 (93.9) |
   Yes | 1083 (7.9) | 649 (10.0) | 434 (6.1) |
Videogame (hours/school day) | Â | Â | Â |
   ≤ 2 hours | 2385 (18.4) | 1521 (23.7) | 864 (12.9) |
   3+ hours | 11472 (81.7) | 5143 (76.3) | 6329 (87.1) |
Physical fighting on school property in the last 12 months | Â | Â | Â |
   No | 11868 (86.5) | 5391 (82.1) | 6477 (91.2) |
   Yes | 1838(13.5) | 1178 (17.9) | 660 (8.8) |