Table 4: Association of maternal factors with gestational age.

- B (95% CI) p
Mothers age (year)
    <18
    18-34.9
    ≥ 35
0.18 (-0.36, 0.72)
-
-0.14 (-0.39, 0.12)
0.51

0.30
Mother height (cm)
    <160
    160-169.9
    ≥ 170
-0.01 (-0.18, 0.17)
-
0.06 (-0.28, 0.40)
0.92

0.73
Pre-pregnancy weight (kg)
    <65
    ≥65
-
-0.20 (-0.38, -0.03)

0.02
Mother BMI (kg/m2)
    < 18.5
    18.5-24.99
    25-29.99
    ≥ 30
-0.05 (-0.53, 0.43)
-
-0.25 (-0.45, -0.04)
-0.33 (-0.59, -0.07)
0.83
0.02

0.01
Education
    low
    moderate
    high
0.02 (-0.20, 0.24)
-
-0.47 (-0.78, -0.17)
0.85

0.002
Economic status
    low
    moderate
    high
0.16 (-0.03, 0.36)
-
-0.18 (-0.45, 0.09)
0.10

0.20
Mode of delivery
    Cesarean
    Vaginal
-0.74 (-0.91, -0.56)
-
<0.001

The univariate general linear model was used for the analysis. Gestational age was used as a dependent variable.