| 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) |  |  |