Risk factors for childhood injury
| Injury risk factor | No (%) with no injury (n=8371) | No (%) with injury (n=3145) | Crude odds ratio (95% CI) |
|---|---|---|---|
| *Data only available from 1992–96; based on 3183 controls and 1094 cases. | |||
| Sibling status | |||
| No older sibling | 3517 (42) | 1072 (34) | 1 |
| Older sibling | 4854 (58) | 2073 (66) | 1.40 (1.29 to 1.53) |
| Gender | |||
| Male | 4255 (51) | 1882 (60) | 1.44 (1.33 to 1.57) |
| Female | 4116 (49) | 1263 (40) | 1 |
| Race | |||
| White | 6236 (75) | 2345 (75) | 1 |
| Black | 401 (4.8) | 154 (4.9) | 1.02 (0.84 to 1.24) |
| Hispanic | 797 (9.5) | 275 (8.7) | 0.92 (0.79 to 1.06) |
| Asian | 426 (5.1) | 146 (4.6) | 0.91 (0.75 to 1.11) |
| Other/unknown | 511 (6.1) | 225 (7.2) | 1.17 (0.99 to 1.38) |
| Maternal age | |||
| ≤14 | 25 (0.31) | 17 (0.54) | 1.88 (1.01 to 3.49) |
| 15–19 | 861 (10) | 369 (12) | 1.18 (1.02 to 1.36) |
| 20–24 | 2130 (25) | 762 (24) | 0.99 (0.88 to 1.10) |
| 25–29 | 2538 (30) | 920 (29) | 1 |
| ≥30 | 2817 (34) | 1077 (34) | 1.05 (0.95 to 1.17) |
| Marital status | |||
| Married | 6244 (75) | 2298 (73) | 1.0 |
| Single | 2096 (25) | 841(27) | 1.09 (0.99 to 1.20) |
| Unknown | 31 (0.38) | 6 (0.19) | 0.53 (0.22 to 1.26) |
| Maternal education* | |||
| Less than high school | 563 (18) | 240 (22) | 1.48 (1.22 to 1.79) |
| High school | 968 (30) | 349 (32) | 1.25 (1.06 to 1.48) |
| College | 1329 (42) | 383 (35) | 1 |
| Unknown | 323 (10) | 122 (11) | 1.31 (1.03 to 1.66) |
| Gestational age | |||
| Term | 6261 (75) | 2242 (71) | 1 |
| Preterm (<37 weeks) | 420 (5) | 175 (6) | 1.16 (0.97 to 1.40) |
| Unknown | 1690 (20) | 728 (23) | 1.20 (1.09 to 1.33) |
| Birth weight (g) | |||
| ≥2500 | 7952 (95) | 2994 (95) | 1 |
| <2500 | 408 (4.9) | 147 (4.7) | 0.96 (0.79 to 1.16) |
| Unknown | 11 (0.15) | 4 (0.13) | 0.97 (0.31 to 3.04) |
| First prenatal visit | |||
| First trimester | 6356 (76) | 2344 (75) | 1 |
| Beyond first trimester | 1635 (20) | 631 (20) | 1.05 (0.94 to 1.16) |
| No prenatal care | 370 (4.4) | 169 (5.4) | 1.24 (1.03 to 1.49) |
| Unknown | 10 (0.12) | 1 (0.03) | 0.27 (0.03 to 2.12) |
| Insurance status | |||
| Insured | 5289 (63) | 1901 (60) | 1 |
| Uninsured | 2962 (35) | 1212 (39) | 1.14 (1.05 to 1.24) |
| Unknown | 120 (1.4) | 32 (1.0) | 0.74 (0.50 to 1.10) |