From: Prognostic factors for low birthweight repetition in successive pregnancies: a cohort study
Variable | Crude PRa[CI95%] | Adjusted PRa[CI95%] | p |
---|---|---|---|
Parity [previous births] (level 1) | 0.01 | ||
1 | 1.0 Reference | ||
2 | 1.56 [0.95,2.55] | ||
≥3 | 1.93 [1.23,3.02] | ||
Economic status (level 2) | 0.045 | ||
A and B | 0.15 [0.03,0.65] | 0.89 [0.01,0.46] | |
C | 0.34 [0.15,0.74] | 0.25 [0.10,0.60] | |
D | 0.69 [0.38,1.24] | 0.60 [0.32,1.10] | |
E (poorest) | 1.0 Reference | 1.0 Reference | |
Father’s schooling (years) (level 2) | 0.13 | ||
0 – 4 | 1.80 [1.02,3.19] | 0.54 [0.25,1.15] | |
5 – 8 | 1.32 [0.76,2.28] | 0.47 [0.22,1.00] | |
≥ 9 | 1.0 Reference | 1.0 Reference | |
Preterm birth history (level 4) | <0.001 | ||
No | 1.0 Reference | 1.0 Reference | |
Yes | 3.55 [2.33,5.41] | 4.01 [2.27,7.10] | |
Newborn’s sex (level 4) | <0.001 | ||
Male | 1.0 Reference | 1.0 Reference | |
Female | 1.99 [1.31,3.02] | 2.61 [1.45,4.69] | |
Prenatal care (level 5) | 0.003 | ||
Adequate | 1.0 Reference | 1.0 Reference | |
Intermediate or Inadequate | 2.09 [1.40,3.13] | 2.57 [1.37,4.81] | |
Miscarriage threat (level 6) | 0.14 | ||
No | 1.01 [0.56,1.81] | 2.00 [0.77,5.14] | |
Yes | 1.0 Reference | 1.0 Reference | |
Gestational weight gain (kg) (level 6) | 0.04 | ||
< 7 | 1.0 Reference | 1.0 Reference | |
7 – 9.9 | 1.47 [0.26,0.84] | 0.59 [0.31,1.13] | |
≥ 10 | 0.83 [0.02,0.26] | 0.09 [0.01,0.77] |