Table 2.
Characteristics of admission by intensive care unit level
| Level 1 | Level 2 | Level 3 | p Value | ||||
|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | ||
| Number of women admitted to ICUa | 266 | 35.6 | 230 | 35.1 | 341 | 29.7 | 0.01 |
| Mean duration of ICU stay (days) | 1.9b | 2.3c | 3.2d | ||||
| Maternal mortality | 4 | 1.5 | 10 | 4.3 | 15 | 4.4 | 0.11 |
| Induction of labour | 83 | 31.2 | 70 | 30.4 | 86 | 25.2 | 0.20 |
| Inotropic support | 10 | 3.8 | 18 | 7.8 | 46 | 13.5 | <0.001 |
| Assisted ventilation | 32 | 12.0 | 87 | 37.8 | 172 | 50.4 | <0.001 |
| Diagnosis | |||||||
| Major obstetric haemorrhage | 110 | 41.4 | 120 | 52.2 | 151 | 44.3 | 0.05 |
| Hypertensive disorders of pregnancy | 111 | 41.7 | 46 | 20.0 | 67 | 19.6 | <0.001 |
| Cardiac disease | 8 | 3.0 | 19 | 8.3 | 28 | 8.2 | 0.02 |
| Sepsis | 12 | 4.5 | 16 | 7.0 | 27 | 7.9 | 0.23 |
| Pulmonary disease | 6 | 2.3 | 12 | 5.2 | 25 | 7.3 | 0.02 |
| Cerebral disease | 2 | 0.8 | 3 | 1.3 | 14 | 4.1 | 0.01 |
| Liver/pancreatic disease | 4 | 1.5 | 2 | 0.9 | 8 | 2.3 | 0.39 |
| Thrombo-embolism | 2 | 0.8 | 4 | 1.7 | 7 | 2.1 | 0.42 |
| Anaesthetic complication | 3 | 1.1 | 4 | 1.7 | 5 | 1.5 | 0.85 |
| Miscellaneous | 8 | 3.0 | 4 | 1.7 | 9 | 2.6 | 0.65 |
Intensive care unit levels are described in the "Methods"
aRates reflect percentage of all women with severe maternal morbidity
bData missing for 22 women
cData missing for 21 women
dData missing for 20 women