Table 1 Body mass index (BMI) (95% CI) at which the predicted risk of outcomes was lowest among pregnancies in nulliparous and parous women
Dataset | Mean BMI (kg/m2) | Any PTB | MPTB |
|---|---|---|---|
Nulliparous | |||
CPP | 21.6 | NAa | 18.8 (b) |
Danish linked data | 24.0 | 22.3 (21.7, 23.6) | 20.7 (20.5, 21.1) |
Norwegian birth registry | 24.1 | 21.4 (20.7, 23.1) | 20.0 (19.6, 20.9) |
CPRD | 24.9 | 21.6 (20.9, 23.1) | 20.6 (20.3, 21.4) |
South Australian BEBOLD | 25.9 | 22.3 (21.1, 26.7) | 20.3 (20.0, 20.9) |
NCHS data (USA) | 26.4 | 21.2 (21.2, 21.3) | 20.2 (20.2, 20.3) |
SAIL databank | 26.7 | 23.2 (21.6, 28.5) | 21.6 (20.1, 42.5) |
Bradford | 28.8 | 27.8 (20.1, b) | 27.6 (b) |
Meta-analysed data | 22.2 (21.5, 23.5) | 20.4 (20.0, 21.1) | |
Parous women | |||
CPP | 23.3 | NAa | NAc |
Danish linked data | 24.6 | 23.8 (22.9, 25.2) | 21.9 (21.4, 22.8) |
Norwegian birth registry | 24.7 | 22.3 (21.4, 24.2) | 20.2 (20.0, 20.5) |
CPRD | 26.5 | 26.5 (23.3, 41.8) | 22.4 (20.7, 30.1) |
South Australian BEBOLD | 27.1 | 26.0 (22.8, 38.3) | 23.1 (21.3, 28.3) |
NCHS data (USA) | 27.5 | 24.1 (23.9, 24.2) | 21.5 (21.2, 21.8) |
SAIL databank | 27.7 | 28.7 (23.9, b) | 23.5 (21.1, b) |
Bradford | 29.7 | NAa | NAa |
Meta-analysed data | 25.9 (24.1, 31.7) | 22.2 (21.1, 24.3) | |