Table 1.

Baseline characteristics and stillbirths of women in the WOMAN trial who survived, and of the women who died. The second and third columns report the number of women in each category and the corresponding percentage. The fourth and fifth columns report the odds ratios, and the P values calculated from the likelihood ratio test

	n (%) alive	n (%) dead	OR (95% CI)	P-value
Age at randomisation (years)
≤ 25	6738 (34.49)	104 (21.53)	1	<  0.001
26–35	10,703 (54.78)	284 (58.80)	1.72 (1.37–2.16)
≥ 36	2090 (10.70)	95 (19.67)	2.94 (2.22–3.91)
Missing	7 (0.04)	0.0
Baby delivered in hospital
Yes	17,249 (88.28)	341 (70.60)	1	<  0.001
No	2287 (11.71)	141 (29.19)	3.12 (2.55–3.81)
Missing	2 (0.01)	1 (0.21)
Type of delivery
Vaginal	13,871 (70.99)	320 (66.25)	1	0.03
Caesarean section	5663 (28.98)	162 (33.54)	1.24 (1.02–1.50)
Missing	4 (0.02)	1 (0.21)
Systolic BP (mmHg)
< 90	3560 (18.22)	276 (57.14)	6.13 (5.05–7.45)	<  0.001
90–120	13,446 (68.82)	170 (35.20)	1
121–140	1775 (9.08)	25 (5.18)	1.11 (0.73–1.70)
> 140	752 (3.85)	12 (2.48)	1.26 (0.70–2.28)
Missing	5 (0.03)	0.0
Estimated volume of blood lost (mL)
≤ 1000	10,327 (52.86)	77 (15.94)	1	<  0.001
1001–2000	8072 (41.31)	213 (44.10)	3.54 (2.72–4.60)
> 2000	1137 (5.82)	193 (39.96)	22.77 (17.36–29.86)
Missing	2 (0.01)	0.0
Haemodynamic instability
No	8168 (41.81)	26 (5.38)	1	<  0.001
Yes	11,369 (58.19)	457 (94.62)	12.63 (8.50–18.77)
Missing	1 (0.01)	0.0
Primary cause of haemorrhage
Uterine atony	12,504 (64.00)	257 (53.21)	1	<  0.001
Placenta praevia/accreta	1835 (9.39)	40 (8.28)	1.06 (0.76–1.49)
Surgical trauma/tears	3582 (18.33)	99 (20.50)	1.34 (1.06–1.70)
Other/Unknown	1617 (8.28)	87 (18.01)	2.62 (2.04–3.36)
Stillbirths
No	17,716 (90.67)	313 (64.80)	1	<  0.001
Yes	1817 (9.30)	169 (34.99)	5.26 (4.34–6.39)
Missing	5 (0.03)	1 (0.21)