Variable | Model 1 | Model 2 | Model 3 | |||
---|---|---|---|---|---|---|
OR | 95% CI | OR | 95% CI | OR | 95% CI | |
Socioeconomic level | ||||||
Medium | 1.14 | [0.75,1.74] | 1.16 | [0.76,1.77] | 1.12 | [0.72,1.74] |
Low | 2.57 | [1.19,5.58] | 2.45 | [1.13,5.36] | 2.68 | [1.19,6.03] |
Maternal age (years) | ||||||
<19 | 0.74 | [0.43,1.25] | 0.74 | [0.43,1.26] | 0.57 | [0.32,1.03] |
>30 | 1.17 | [0.70,1.98] | 1.09 | [0.64,1.84] | 1.34 | [0.76,2.38] |
Maternal education (years) | ||||||
< 7 | 1.21 | [0.58,2.56] | 1.11 | [0.52,2.40] | 1.05 | [0.47,2.34] |
7–9 | 1.29 | [0.63,2.62] | 1.23 | [0.59,2.55] | 1.39 | [0.66,2.94] |
10–12 | 1.56 | [0.78,3.13] | 1.61 | [0.79,3.27] | 1.82 | [0.87,3.77] |
Unmarried | 0.99 | [0.49,2.01] | 1.08 | [0.52,2.28] | 0.96 | [0.44,2.08] |
No accessibility to public services | 0.68 | [0.34,1.33] | 0.58 | [0.29,1.17] | 0.56 | [0.27,1.14] |
Smoking before pregnancy | 0.99 | [0.57,1.72] | 1.07 | [0.60,1.90] | ||
Smoking during pregnancy | 1.09 | [0.43,2.78] | 1.14 | [0.43,2.99] | ||
Hypertension | 1.61 | [0.95,2.73] | 1.55 | [0.90,2.68] | ||
Urinary tract infection | 1.23 | [0.83,1.83] | 1.14 | [0.76,1.71] | ||
No calcium supplementation | 1.98 | [1.01,3.87] | 2.30 | [1.14,4.63] | ||
No iron supplementation | 1.23 | [0.84,1.80] | 1.32 | [0.89,1.96] | ||
No prenatal care | 1.15 | [0.47,2.87] | 1.27 | [0.52,3.19] | ||
Primiparous | 1.73 | [1.05,2.83] | ||||
Pre-gestational weight(kgs) | ||||||
<48 | 2.33 | [1.33,4.08] | ||||
49–54 | 1.28 | [0.71,2.31] | ||||
>60 | 1.32 | [0.74,2.36] | ||||
Previous preterm birth a | 2.95 | [1.04,8.38]** | ||||
Previous low birth weight a | 2.61 | [1.36,5.04] | ||||
Previous abortion a | 0.52 | [0.17,1.63] |