Table 3.
Mean difference (95% confidence interval) in lung function outcomes associated with maternal anaemia in late pregnancy (N = 4,343)a
| Model 1 | Model 2 | Model 3 | |
|---|---|---|---|
| Mean difference (95% CI) | Mean difference (95% CI) | Mean difference (95% CI) | |
| FEV1 SD score b | |||
| Late pregnancy anaemia | |||
| No | 0 | 0 | 0 |
| Yes | −0.05 (−0.11, 0.02) | −0.04 (−0.11, 0.02) | −0.06 (−0.12, 0.01) |
| FVC SD score b | |||
| Late pregnancy anaemia | |||
| No | 0 | 0 | 0 |
| Yes | −0.08 (−0.14, −0.01) | −0.07 (−0.13, −0.01) | −0.08 (−0.15, −0.02) |
| FEF25‐75 SD score b | |||
| Late pregnancy anaemia | |||
| No | 0 | 0 | 0 |
| Yes | 0.01 (−0.05, 0.08) | 0.01 (−0.06, 0.07) | 0.00 (−0.06, 0.07) |
a
Model 1 is adjusted for offspring sex and gestational age at the time of the haemoglobin measure; Model 2 is additionally adjusted for maternal asthma, maternal eczema, maternal pre‐pregnancy BMI, maternal age, maternal parity, maternal smoking during pregnancy, maternal education, multiple pregnancy and maternal ethnicity; Model 3 is additionally adjusted for gestational age at birth and birthweight.
b
Lung function SD scores are standardised by age, sex and height.