OR and HR and 95% confidence limits for adverse birth outcomes following maternal exposure to injuries during pregnancy*
| Outcome | Non-injured women (N=86 891) | Injured women (N=3561) | Women with head or neck injuries (N=534) | Women with head injuries (N=312) |
| Small for gestational age† | Reference | 1.06 (0.95 to 1.18) | 1.15 (0.88 to 1.52) | 1.18 (0.84 to 1.64) |
| Spontaneous abortion‡ | Reference | 1.18 (0.99 to 1.40) | 1.02 (0.68 to 1.53) | 0.93 (0.60 to 1.44) |
| Stillbirth‡ | Reference | 1.67 (1.01 to 2.77) | 2.08 (0.67 to 6.50) | 3.17 (1.02 to 9.88) |
| Low birth weight (g)† | ||||
| <1500 | – | 0.76 (0.48 to 1.24) | 0.89 (0.22 to 3.57) | 0.83 (0.12 to 5.95) |
| 1500–2499 | – | 1.05 (0.90 to 1.23) | 1.12 (0.67 to 1.89) | 1.09 (0.70 to 1.71) |
| ≥2500 | – | Reference | Reference | Reference |
| Preterm birth‡ | ||||
| <34 weeks | – | 0.77 (0.39 to 1.48) | 0.89 (0.22 to 3.57) | 0.92 (0.13 to 6.60) |
| 34–36 weeks | – | 1.05 (0.90 to 1.23) | 0.99 (0.68 to 1.45) | 1.35 (0.86 to 2.12) |
| ≥37 weeks | – | Reference | Reference | Reference |
| APGAR score† | ||||
| ≤3 | – | 1.15 (0.93 to 1.40) | Not enough data | Not enough data |
| 4–6 | – | 0.78 (0.47 to 1.31) | Not enough data | Not enough data |
| 7–10 | – | Reference | Reference | Reference |
↵* All models were adjusted for eclampsia/pre-eclampsia and gestational diabetes status during pregnancy, maternal smoking and drinking during pregnancy, household socioeconomic status, and maternal age at birth, preterm birth model includes all aforementioned variables and history of preterm birth; non-injured women were used as the comparison group.
↵† ORs.
↵‡ HRs.