Table 2 Mean difference (95% confidence interval) of birth weight (gm) (N = 6528) and placenta weight (gm) (N = 6281) by IOM, pre-pregnancy BMI categories and gestational weight gain per 0.1 kg/week, adjusting for potential confounding factors
Mean difference of birth weight | Mean difference of placenta weight | |||
|---|---|---|---|---|
Age adjusted | Fully adjusted¥ | Age adjusted | Fully adjusted¥ | |
IOM § | ||||
Inadequate | -190.63 (-221.05,-160.20) | -152.82 (-180.34,-125.30) | -37.16 (-45.23,-29.09) | -37.80 (-45.87,-29.72) |
Adequate (ref.) | 0 | 0 | 0 | 0 |
Excess | 206.45 (178.82,234.08) | 211.34 (186.29,236.38) | 41.16 (33.83,48.49) | 42.76 (35.39,50.14) |
Pre-pregnancy BMI § | ||||
Underweight | -207.26 (-249.21,-165.31) | -171.27 (-209.15,-133.38) | -43.23 (-54.18.-32.28) | -43.06 (-54.05,-32.08) |
Normal (ref.) | 0 | 0 | 0 | 00 |
Overweight | 123.17 (84.47,161.87) | 125.98 (90.97,161.00) | 35.54 (25.47,45.61) | 36.56 (26.44,46.67) |
Obese | 148.11 (85.32,21.091) | 178.00 (121.09,234.91) | 58.49 (41.97,75.00) | 59.80 (43.20,76.41) |
Gestational weight gain § (0.1 kg/week) | 81.52 (72.97,90.07) | 88.67 (81.09,96.29) | 16.77 (14.52,19.01) | 17.32 (15.05,19.59) |