Table 2. Sociodemographic, previous medical history and current pregnancy information in women undergoing massive transfusion for major obstetric haemorrhage.
| UK n = 162 | Australia n = 61 | Italy n = 99 | the Netherlands n = 179 | France n = 126 | Denmark n = 288 | P-value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| National denominator | 787,105 | 302,666 | 458,995 | 270,101 | 182,309 | 349,998 | ||||||||
| Incidence per 100,000 maternities | 20·6 (17·5–24·0) | 20·2 (15·4–25·9) | 21·6(17·5–26·3) | 66·3 (56·9–76·7) | 69·1 (57·9–82·3) | 82·3 (73·1–92·4) | ||||||||
| Age | Mean (Std) | 33 | (5·9) | 33 | (5·3) | 35 | (6·1) | 32 | (5·3) | 33 | (5·9) | 32 | (5·4) | <0·001 |
| BMI | Median (IQR) | 25 | (22–29) | 25 | (21–28) | 23 | (21–25) | 23 | (21–26) | 24 | (21–27) | 23 | (21–27) | <0·001 |
| Previous medical history | ||||||||||||||
| Parity | Nulliparous | 60 | (37·3) | 20 | (32·8) | 48 | (48·5) | 84 | (46·9) | 56 | (44·8) | 128 | (44·8) | 0·185 |
| Multiparous | 101 | (62·7) | 41 | (67·2) | 51 | (51·5) | 95 | (53·1) | 69 | (55·2) | 158 | (55·2) | ||
| Missing | 1 | 0 | 0 | 0 | 1 | 2 | ||||||||
| Previous caesarean section | None | 35 | (34·3) | 25 | (61) | 23 | (46·9) | 51 | (53·7) | 38 | (55·9) | 77 | (48·1) | 0·020 |
| Yes | 67 | (65·7) | 16 | (39) | 26 | (53·1) | 44 | (46·3) | 30 | (44·1) | 83 | (51·9) | ||
| Nulliparous | 60 | 20 | 48 | 84 | 56 | 128 | ||||||||
| Missing | 0 | 0 | 2 | 0 | 2 | 0 | ||||||||
| Number of previous caesarean section | 0 | 35 | (34·3) | 25 | (61) | 23 | (46·9) | - | - | 38 | (55·9) | - | - | 0.036 |
| 1 | 38 | (37·3) | 10 | (24·4) | 16 | (32·7) | - | - | 21 | (30·9) | - | - | ||
| 2+ | 29 | (28·4) | 6 | (14·6) | 10 | (20·4) | - | - | 9 | (13·2) | - | - | ||
| Nulliparous | 60 | 20 | 48 | - | - | 56 | - | - | ||||||
| Missing | 0 | 0 | 2 | 2 | ||||||||||
| Previous postpartum haemorrhage | None | 78 | (76·5) | 29 | (85·3) | 41 | (91·1) | 86 | (91·5) | 64 | (92·8) | - | - | 0·007 |
| Yes | 24 | (23·5) | 5 | (14·7) | 4 | (8·9) | 8 | (8·5) | 5 | (7·2) | - | - | ||
| Nulliparous | 60 | 20 | 48 | 84 | 56 | - | - | |||||||
| Missing | 0 | 7 | 6 | 1 | 1 | - | - | |||||||
| Current pregnancy | ||||||||||||||
| Hypertension prior to pregnancy or current problem | None | 161 | (99·4) | 59 | (96·7) | 94 | (94·9) | 153 | (85·5) | 124 | (99·2) | - | - | <0·001 |
| Yes | 1 | (0·6) | 2 | (3·3) | 5 | (5·1) | 26 | (14·5) | 1 | (0·8) | - | - | ||
| Missing | 0 | 0 | 0 | 0 | 1 | - | - | |||||||
| Infection in current pregnancy | No | 161 | (99·4) | 56 | (94·9) | 99 | (100) | 179 | (100) | 117 | (97·5) | - | - | 0·006* |
| Yes | 1 | (0·6) | 3 | (5·1) | 0 | (0) | 0 | (0) | 3 | (2·5) | - | - | ||
| Missing | 0 | 2 | 0 | 0 | 6 | - | - | |||||||
| Inherited bleeding disorders | No | 160 | (98·8) | 55 | (98·2) | - | - | - | - | 121 | (96·8) | - | - | 0·602* |
| Yes | 2 | (1·2) | 1 | (1·8) | - | - | - | - | 4 | (3·2) | - | - | ||
| Missing | 0 | 5 | - | - | - | - | 1 | - | - | |||||
| Multiple pregnancy | No | 155 | (95·7) | 58 | (95·1) | 92 | (92·9) | 167 | (93·8) | 108 | (85·7) | 219 | (76) | <0·001 |
| Yes | 7 | (4·3) | 3 | (4·9) | 7 | (7·1) | 11 | (6·2) | 18 | (14·3) | 69 | (24) | ||
| Missing | 0 | 0 | 0 | 1 | 0 | 0 | ||||||||
| Induced | None | 103 | (65·2) | 20 | (54·1) | 56 | (73·7) | 117 | (65·4) | 52 | (41·6) | - | - | <0·001 |
| Yes | 55 | (34·8) | 17 | (45·9) | 20 | (26·3) | 62 | (34·6) | 73 | (58·4) | - | - | ||
| Missing | 4 | 24 | 23 | 0 | 1 | - | - | |||||||
| Delivery type | Vaginal delivery | 50 | (31·6) | 25 | (41) | 37 | (37·4) | 104 | (58·4) | 47 | (37·6) | 92 | (31·9) | <0·001 |
| Caesarean delivery | 108 | (68·4) | 36 | (59) | 62 | (62·6) | 74 | (41·6) | 78 | (62·4) | 196 | (68·1) | ||
| N/A Pregnancy loss | 4 | 0 | 0 | 1 | 1 | 0 | ||||||||
*Used Fisher’s exact test.
Missing data were not included in the percentage. A dash indicated that the country did not collect data on that specific variable.