Characteristic | Motor vehicle crash | Motor vehicle crash |
---|---|---|
Present † (n=548) | Absent ‡ (n=3836) | |
Age | ||
<25 | 132 (24) | 933 (24) |
25–35 | 351 (64) | 2430 (63) |
>35 | 65 (12) | 473 (12) |
Socioeconomic status§ | ||
Higher | 181 (33) | 1230 (32) |
Middle | 104 (19) | 762 (20) |
Lower | 263 (48) | 1844 (48) |
Home location | ||
Urban | 485 (89) | 3447 (90) |
Rural | 63 (11) | 389 (10) |
Enrolment interval | ||
First 5 years | 277 (51) | 1970 (51) |
Second 5 years | 271 (49) | 1866 (49) |
Prenatal care¶ | ||
≥13 clinic encounters | 516 (94) | 3620 (94) |
≥1 hospital admission | 322 (59) | 2278 (59) |
Parity | ||
Primiparous | 288 (53) | 2024 (53) |
Multiparous | 260 (47) | 1812 (47) |
Pregnancy duration | ||
Preterm | 548 (100) | 3836 (100) |
At-term | – | – |
Post-term | – | – |
Mode of delivery | ||
Vaginal | 321 (59) | 2255 (59) |
Caesarean | 227 (41) | 1581 (41) |
Newborn child | ||
Male | 287 (52) | 2036 (53) |
Female | 252 (46) | 1761 (46) |
Not recorded | 9 (2) | 39 (1) |
Length of hospital stay | ||
≤3 days | 173 (32) | 1224 (32) |
≥4 days | 375 (68) | 2612 (68) |
Values are count (percentage) of each group.
*All data from propensity-matched analysis of original cohort.
†Crash present group includes all cases with preterm birth.
‡Crash absent group includes those from 1:7 matching of cases to controls.
§Based on median neighbourhood income quintile.
¶In previous year.