Table 4

Regression coefficients and 95% CI of head circumference and gestational age in relation to socioeconomic trajectory

Socioeconomic trajectoryHead circumference (cm)Gestational age (weeks)
CrudeModel 1Model 2Model 3CrudeModel 1Model 2Model 3
Mothersp=0.08p=0.22p=0.47p=0.39p=0.01p=0.008p=0.01p=0.005
Always poorReferenceReferenceReferenceReferenceReferenceReferenceReferenceReference
Poor→non-poor−0.03 (−1.00 to 0.95)−0.28 (−1.50 to 0.95)0.03 (−1.22 to 1.28)0.15 (−1.09 to 1.40)0.12 (−1.28 to 1.52)0.54 (−1.16 to 2.24)0.76 (−0.99 to 2.52)0.99 (−0.72 to 2.71)
Non-poor→poor0.52 (0.20 to 1.24)0.43 (−0.46 to 1.33)0.44 (−0.44 to 1.33)0.5 (−0.38 to 1.37)1.5 (0.45 to 2.55)1.89 (0.65 to 3.13)1.9 (0.66 to 3.14)1.99 (0.79 to 3.21)
Never poor0.86 (0.15 to 1.57)0.87 (−0.07 to 1.80)0.72 (−0.22 to 1.65)0.8 (−0.13 to 1.73)1.34 (0.30 to 2.38)1.99 (0.69 to 3.28)1.88 (0.57 to 3.19)2.03 (0.75 to 3.31)
Fathersp=0.42p=0.44p=0.45p=0.47p=0.43p=0.43p=0.42p=0.39
Always poorReferenceReferenceReferenceReferenceReferenceReferenceReferenceReference
Poor→non-poor0.8 (−0.25 to 1.85)0.75 (−0.37 to 1.87)0.75 (−0.38 to 1.89)0.74 (−0.41 to 1.88)1.57 (−0.40 to 3.55)1.59 (−0.31 to 3.48)1.63 (−0.29 to 3.55)1.68 (−0.24 to 3.61)
Non-poor→poor−0.04 (−0.77 to 0.68)−0.2 (−1.08 to 0.69)−0.19 (−1.09 to 0.71)−0.2 (−1.10 to 0.71)0.61 (−0.75 to 1.96)0.31 (−1.18 to 1.80)0.35 (−1.16 to 1.86)0.37 (−1.15 to 1.89)
Never poor0.23 (−0.46 to 0.92)−0.01 (−0.85 to 0.83)−0.01 (−0.86 to 0.85)−0.01 (−0.87 to 0.85)0.53 (−0.75 to 1.81)0.35 (−1.07 to 1.77)0.37 (−1.06 to 1.81)0.4 (−1.04 to 1.83)
• Model 1: anthropometry of the grandmother (weight, height, body mass index (BMI) and age). Model 2: model 1+parental birth weight. Model 3: model 2+parental BMI in 2004.