Number and relative risk (RR) of injury fatalities for highest risk factors by intent
| Intentional (n=2345) | Undetermined (n=431) | Unintentional (n=7594) | ||||
|---|---|---|---|---|---|---|
| Factor | No | RR | No | RR | No | RR |
| *For this factor, some data were missing or reported as unknown. Education was not reported in Texas and California in 1983–88 or in Washington in 1983–91. | ||||||
| First prenatal visit (months)* | ||||||
| None | 244 | 8.7 | 52 | 10.3 | 447 | 4.2 |
| 7–9 | 187 | 3.1 | 41 | 3.8 | 608 | 2.6 |
| 4–6 | 630 | 2.4 | 112 | 2.3 | 2031 | 2.0 |
| 1–3 | 1130 | 1.0 | 203 | 1.0 | 4287 | 1.0 |
| Mother's education (years)* | ||||||
| ≤11 | 830 | 8.3 | 179 | 9.4 | 2724 | 5.8 |
| 12 | 742 | 4.0 | 131 | 3.7 | 2348 | 2.7 |
| 13–15 | 215 | 2.3 | 37 | 2.1 | 811 | 1.9 |
| ≥16 | 79 | 1.0 | 15 | 1.0 | 368 | 1.0 |
| Mother's age (years) | ||||||
| <17 | 162 | 5.6 | 27 | 5.3 | 366 | 3.1 |
| 17–19 | 578 | 4.5 | 106 | 4.8 | 1471 | 2.9 |
| 20–24 | 889 | 2.6 | 174 | 2.9 | 2899 | 2.1 |
| ≥25 | 716 | 1.0 | 124 | 1.0 | 2858 | 1.0 |
| Mother's marital status | ||||||
| Unmarried | 1371 | 4.3 | 255 | 4.4 | 3355 | 2.4 |
| Married | 974 | 1.0 | 176 | 1.0 | 4239 | 1.0 |
| Gestational age at birth (weeks)* | ||||||
| <28 | 47 | 3.4 | 12 | 4.6 | 131 | 2.6 |
| 28–36 | 377 | 2.2 | 81 | 2.5 | 1154 | 1.9 |
| ≥37 | 1672 | 1.0 | 309 | 1.0 | 5917 | 1.0 |
| Birth order* | ||||||
| Third or subsequent child | 648 | 1.1 | 139 | 1.5 | 2775 | 1.9 |
| Second child | 689 | 1.0 | 133 | 1.1 | 2466 | 1.4 |
| First child | 919 | 1.0 | 148 | 1.0 | 2295 | 1.0 |
| Race | ||||||
| Black | 922 | 3.4 | 188 | 4.1 | 2176 | 2.1 |
| American Indian | 55 | 3.6 | 11 | 4.2 | 200 | 3.4 |
| Asian | 36 | 0.7 | 5 | 0.6 | 133 | 0.7 |
| White or other | 1332 | 1.0 | 227 | 1.0 | 5085 | 1.0 |