Variables | Categories | Regression coefficients (95% CI) | ||
Model 1 (BM) | Model 2 | Model 3 | ||
Maternal education | High | Reference | Reference | Reference |
Mid–high | 0.81 (0.53 to 1.25) | 0.83 (0.54 to 1.27) | 0.81 (0.53 to 1.25) | |
Mid–low | 0.65 (0.41 to 1.04) | 0.67 (0.42 to 1.07) | 0.65 (0.41 to 1.04) | |
Low | 1.10 (0.66 to 1.84) | 1.28 (0.78 to 2.12) | 1.10 (0.66 to 1.84) | |
Parity | Primipara | 1.41 (0.99 to 2.00) | 1.61 (1.15 to 2.27) | 1.41 (0.99 to 2.00) |
Gender | Girl | 0.83 (0.61 to 1.13) | 0.89 (0.66 to 1.21) | 0.83 (0.61 to 1.13) |
Maternal age | 0.93 (0.76 to 1.13) | 0.88 (0.72 to 1.08) | ||
Maternal height | 0.71 (0.59 to 0.86) | 0.74 (0.61 to 0.90) | ||
Preeclampsia | Yes | 4.73 (2.49 to 9.00) | ||
IUGR | Yes | 8.31 (4.32 to 15.99) | ||
Financial concerns | No concerns | Reference | Reference | |
Some concerns | 1.38 (0.86 to 2.23) | 1.36 (0.79 to 2.33) | ||
Great concerns | 1.43 (0.44 to 4.67) | 1.13 (0.31 to 4.16) | ||
Long-lasting difficulties | 0.98 (0.80 to 1.20) | 0.95 (0.75 to 1.20) | ||
Psychopathology | 1.04 (0.91 to 1.19) | 1.10 (0.96 to 1.26) | ||
Smoking habits | No | Reference | Reference | |
Until pregnancy known | 1.03 (0.60 to 1.76) | 1.05 (0.60 to 1.81) | ||
Continued during pregnancy | 0.97 (0.62 to 1.50) | 1.01 (0.65 to 1.58) | ||
Alcohol consumption | No | Reference | Reference | |
<1 drink per week | 0.85 (0.60 to 1.22) | 0.86 (0.60 to 1.24) | ||
⩾1 drink per week | 0.78 (0.47 to 1.30) | 0.80 (0.48 to 1.34) | ||
BMI | <18 | 1.43 (0.32 to 6.31) | 1.60 (0.36 to 7.05) | |
18–25 | Reference | Reference | ||
>25 | 1.06 (0.77 to 1.47) | 1.05 (0.75 to 1.46) |
BM, basic model; BMI, body mass index; IUGR, intrauterine growth restriction.