Table 2. The distribution of rates of injury mechanism, nature and types between gender.
| Frequency (%) | Rate (per 1,000 students per month) (95% CI) | Gender Comparison | |||||
|---|---|---|---|---|---|---|---|
| Variable | Boys | Girls | Total | Boys | Girls | Overall | p-value |
| Injury Mechanism | |||||||
| Playing | 1393 (61.5) | 872 (38.5) | 2265 (49.0) | 29.9 (26.9, 32.9) | 18.5 (16.2, 20.9) | 24.2 (21.5, 26.9) | <0.0001 |
| Running | 584 (62.9) | 344 (37.1) | 928 (20.1) | 12.5 (10.6, 14.5) | 7.3 (5.8, 8.8) | 9.9 (8.2, 11.6) | <0.0001 |
| Walking | 137 (54.6) | 114 (45.4) | 251 (5.4) | 2.9 (2.0, 3.9) | 2.4 (1.6, 3.3) | 2.7 (1.8, 3.6) | 0.1248 |
| Other | 340 (64.5) | 187 (35.5) | 527 (11.4) | 7.3 (5.8, 8.8) | 4.0 (2.8, 5.1) | 5.6 (4.3, 6.9) | <0.0001 |
| Unknown/Missing | 648 (14.0) | 6.9 (5.5, 8.4) | |||||
| Intention | |||||||
| Unintentional | 1612 (62.5) | 966 (37.5) | 2578 (55.8) | 34.6 (31.4, 37.8) | 20.5 (18.0, 23.0) | 27.5 (24.7, 30.4) | <0.0001 |
| Intentional | 131 (72.8) | 49 (27.2) | 180 (3.9) | 2.8 (1.9, 3.7) | 1.0 (0.5, 1.6) | 1.9 (1.2, 2.7) | <0.0001 |
| Unclear | 327 (63.9) | 185 (36.1) | 512 (11.1) | 7.0 (5.6, 8.5) | 3.9 (2.8, 5.0) | 5.5 (4.2, 6.7) | <0.0001 |
| Unknown/Missing | 1349 (29.2) | 14.4 (12.3, 16.5) | |||||
| Injury Nature | |||||||
| Upper Extremities | 730 (62.3) | 441 (37.7) | 1171 (25.4) | 15.7 (13.5, 17.8) | 9.4 (7.7, 11.0) | 12.5 (10.6, 14.4) | <0.0001 |
| Lower Extremities | 779 (58.2) | 560 (41.8) | 1339 (29.0) | 16.7 (14.5, 19.0) | 11.9 (10.0, 13.8) | 14.3 (12.2, 16.4) | <0.0001 |
| Face | 831 (62.3) | 502 (37.7) | 1333 (28.9) | 17.8 (15.5, 20.1) | 10.7 (8.9, 12.4) | 14.2 (12.2, 16.3) | <0.0001 |
| Head | 273 (66.7) | 136 (33.3) | 409 (8.9) | 5.9 (4.5, 7.2) | 2.9 (2.0, 3.8) | 4.4 (3.2, 5.5) | <0.0001 |
| Other | 190 (69.6) | 83 (30.4) | 273 (5.9) | 4.1 (3.0, 5.2) | 1.8 (1.0, 2.5) | 2.9 (2.0, 3.9) | <0.0001 |
| Unknown/Missing | 94 (2.0) | 1.0 (0.5, 1.6) | |||||
| Injury Type | |||||||
| Bump/Hit | 1133 (62.7) | 673 (37.3) | 1806 (39.1) | 24.3 (21.6, 27.0) | 14.3 (12.2, 16.4) | 19.3 (16.9, 21.7) | <0.0001 |
| Bruise | 785 (61.7) | 487 (38.3) | 1272 (27.5) | 16.9 (14.6, 19.1) | 10.3 (8.6, 12.1) | 13.6 (11.6, 15.6) | <0.0001 |
| Scrape/Scratch | 418 (61.7) | 260 (38.3) | 678 (14.7) | 9.0 (7.3, 10.6) | 5.5 (4.2, 6.8) | 7.2 (5.8, 8.7) | <0.0001 |
| Cut | 151 (66.5) | 76 (33.5) | 227 (4.9) | 3.2 (2.3, 4.2) | 1.6 (0.9, 2.3) | 2.4 (1.6, 3.3) | <0.0001 |
| Sprain | 115 (54.8) | 95 (45.2) | 210 (4.5) | 2.5 (1.6, 3.3) | 2.0 (1.2, 2.8) | 2.2 (1.4, 3.1) | 0.1455 |
| Other | 263 (62.5) | 158 (37.5) | 421 (9.1) | 5.7 (4.3, 7.0) | 3.4 (2.3, 4.4) | 4.5 (3.3, 5.7) | <0.0001 |
| Unknown/Missing | 5 (0.1) | 0.1 (0.0, 0.2) | |||||
| Injury Severity | |||||||
| Minor | 1130 (60.0) | 753 (40.0) | 1883 (40.8) | 24.3 (21.6, 26.9) | 16.0 (13.8, 18.2) | 20.1 (17.7, 22.5) | <0.0001 |
| Moderate | 1063 (65.9) | 551 (34.1) | 1614 (34.9) | 22.8 (20.2, 25.4) | 11.7 (9.8, 13.6) | 17.2 (15.0, 19.5) | <0.0001 |
| Severe | 12 (85.7) | 2 (14.3) | 14 (0.3) | 0.3 (0.0, 0.5) | 0.0 (0.0, 0.2) | 0.2 (0.0, 0.4) | <0.0001 |
| Unknown/Missing | 1108 (24.0) | 11.8 (9.9, 13.7) | |||||