Table 3.
Unadjusted and adjusted odds ratios (95% confidence interval) for cause specific neonatal death by day and time of birth
| Timing of birth | Unadjusted | Adjusted* | Adjusted* (excluding elective caesarean†) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| All cause | Anoxia | Not anoxia | All cause | Anoxia | Not anoxia | All cause | Anoxia | Not anoxia | |||
| Weekday, 0900-1700 | (1.0) | (1.0) | (1.0) | (1.0) | (1.0) | (1.0) | (1.0) | (1.0) | (1.0) | ||
| Weekday, 1701-0859 | 1.3‡ (1.1 to 1.6) | 1.7§ (1.2 to 2.3) | 1.0 (0.8 to 1.4) | 1.3‡ (1.0 to 1.6) | 1.6§ (1.2 to 2.2) | 1.1 (0.8 to 1.4) | 1.2 (0.9 to 1.5) | 1.4‡ (1.0 to 1.9) | 1.1 (0.8 to 1.5) | ||
| Weekend | 1.4‡ (1.1 to 1.7) | 1.8§ (1.2 to 2.5) | 1.1 (0.8 to 1.5) | 1.4‡ (1.1 to 1.7) | 1.7§ (1.2 to 2.5) | 1.1 (0.8 to 1.5) | 1.3‡ (1.0 to 1.7) | 1.5‡ (1.1 to 2.1) | 1.1 (0.8 to 1.6) | ||
| All out of hours | 1.3§ (1.1 to 1.6) | 1.7§ (1.3 to 2.3) | 1.1 (0.8 to 1.4) | 1.3‡ (1.1 to 1.6) | 1.7§ (1.2 to 2.3) | 1.1 (0.8 to 1.4) | 1.3 (1.0 to 1.6) | 1.5‡ (1.1 to 1.9) | 1.1 (0.8 to 1.5) | ||
*Adjusted for year of delivery, maternal age, parity, height, socioeconomic deprivation, gestational age, birthweight centile, fetal sex, onset of labour, and hospital throughput.
†After exclusion of deliveries by elective caesarean, unadjusted odds ratio for all out of hours births was 1.3 (1.0 to 1.6) for all cause death, 1.5 (1.1 to 2.0) for anoxic death, and 1.1 (0.8 to 1.5) for non-anoxic death.
‡P<0.05.
§P<0.01.