Table 4

Mean growth rates across categories of maternal education

Age/growth periodMean growth rates by category of maternal education, cm per month (95% CI)p Value for χ2 test of difference between growth rates
Less than O-levelO-levelA-levelDegree or above
Boys N=6380
Birth length, cm50.55 (50.42 to 50.68)50.70 (50.58 to 50.82)50.71 (50.57 to 50.85)51.02 (50.84 to 51.20)0.0003
Growth 0–3 months, cm/month3.84 (3.79 to 3.89)3.83 (3.78 to 3.88)3.83 (3.77 to 3.89)3.82 (3.74 to 3.90)0.97
Growth 3–10 months, cm/month1.68 (1.66 to 1.70)1.69 (1.67 to 1.71)1.70 (1.67 to 1.73)1.67 (1.63 to 1.71)0.57
Growth 10–29 months, cm/month0.95 (0.94 to 0.96)0.96 (0.95 to 0.97)0.96 (0.96 to 0.97)0.97 (0.96 to 0.98)0.028
Growth 29–120 months, cm/month0.53 (0.53 to 0.53)0.54 (0.54 to 0.54)0.54 (0.54 to 0.54)0.54 (0.54 to 0.54)<0.0001
Girls N=5986
Birth length, cm49.46 (49.33 to 49.59)49.72 (49.60 to 49.84)49.79 (49.65 to 49.93)50.11 (49.93 to 50.29)<0.0001
Growth 0–2 months, cm/month3.88 (3.82 to 3.94)3.85 (3.82 to 3.88)3.89 (3.82 to 3.96)3.84 (3.75 to 3.93)0.68
Growth 2–11 months, cm/month1.84 (1.82 to 1.86)1.84 (1.82 to 1.86)1.81 (1.79 to 1.83)1.80 (1.77 to 1.83)0.0079
Growth 11–32 months, cm/month0.88 (0.80 to 0.96)0.90 (0.89 to 0.91)0.90 (0.89 to 0.91)0.92 (0.91 to 0.93)<0.0001
Growth 32–120 months, cm/month0.53 (0.53 to 0.53)0.53 (0.53 to 0.53)0.54 (0.002)0.54 (0.54 to 0.54)<0.0001