Event rates for serious motor vehicle crashes during the baseline period and second trimester of pregnancy
| Variable | Total no. of events | Event rate* | Relative risk (95% CI) | |
|---|---|---|---|---|
| Baseline | Pregnancy | |||
| Motor vehicle crash | ||||
| Driver | 7 679 | 4.55 | 6.47 | 1.42 (1.32–1.53) |
| Passenger | 5 669 | 3.42 | 4.01 | 1.17 (1.07–1.29) |
| Pedestrian | 858 | 0.54 | 0.36 | 0.67 (0.50–0.92) |
| Miscellaneous† | 3 464 | 2.17 | 1.39 | 0.64 (0.55–0.75) |
| Other incidents | ||||
| Fall‡ | 25 653 | 15.54 | 17.16 | 1.10 (1.06–1.16) |
| Poisoning§ | 6 539 | 4.17 | 1.67 | 0.40 (0.35–0.46) |
| Assault¶ | 6 334 | 3.93 | 3.00 | 0.76 (0.69–0.85) |
| Self-harm** | 3 802 | 2.47 | 0.40 | 0.16 (0.12–0.22) |
| Burn†† | 2 963 | 1.84 | 1.36 | 0.74 (0.63–0.87) |
| General medical | ||||
| Pre-eclampsia | 361 | 0.18 | 0.75 | 4.19 (3.31–5.35) |
| Venous thrombosis | 1 289 | 0.70 | 1.92 | 2.75 (2.39–3.18) |
| Depression | 6 268 | 3.97 | 1.87 | 0.47 (0.41–0.54) |
Note: CI = confidence interval.
↵* Calculated per 1000 women annually during corresponding interval. Baseline spans the 3-year period before conception; pregnancy spans 3 total months of the second trimester. One month was defined as 28 consecutive days in all analyses
↵† Includes aircraft, watercraft, bicycling, animal drawn, industrial, boarding and alighting events.
↵‡ Includes falls from the same level or a different level (codes W00–W19).
↵§ Includes drug overdose or toxin exposure (codes T36–T65).
↵¶ Includes injury, maltreatment and neglect (codes X85–X99; Y00–Y09).
↵** Includes poisoning, suffocation, firearm or other means (codes X60–X84).
↵†† Includes thermal, lightning, radiation and chemical (codes T20–T32).