| Body mass index (BMI) at booking (kg/m2) | Average rate of intrapartum caesarean birth (category 1, 2 or 3) | Average rate of emergency caesarean birth (category 1 or 2) | Average rate of postpartum haemorrhage |
|---|---|---|---|
| 35 or less | 82 per 1,000 (so this does not happen in about 918 pregnancies per 1,000) | 65 per 1,000 (so this does not happen in about 935 pregnancies per 1,000) | 17 per 1,000 (so this does not happen in about 983 pregnancies per 1,000) |
| More than 35 | 138 per 1,000 (so this does not happen in about 862 pregnancies per 1,000). This is an average increase of 56 per 1,000 compared with women with a BMI less than 35 kg/m2 (so for about 944 pregnancies per 1,000, the outcome was the same) | 122 per 1,000 (so this does not happen in about 878 pregnancies per 1,000). This is an average increase of 57 per 1,000 compared with women with a BMI less than 35 kg/m2 (so for about 943 pregnancies per 1,000, the outcome was the same) | 51 per 1,000 (so this does not happen in about 949 pregnancies per 1,000). This is an average increase of 34 per 1,000 compared with women with a BMI less than 35 kg/m2 (so for about 966 pregnancies per 1,000, the outcome was the same) |
From: Intrapartum care
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