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Table 2 Associations of infant SES with differences of zBMI growth separated by birth weight in each growth period

From: Socioeconomic disparities and infancy growth trajectory: a population-based and longitudinal study

 

Model 1

Model 2

Growth periods

Mean difference (95% CI) between low SES vs. high SES

Normal birth weight

 6 mo

− 0.11(− 0.47, 0.25)

−0.20(− 0.58, 0.18)

 9 mo

− 0.08(− 0.43, 0.26)

−0.19(− 0.54, 0.16)

 12 mo

− 0.14(− 0.48, 0.21)

−0.25(− 0.60, 0.11)

 0-6 mo

0.03(− 0.38, 0.43)

0.05(− 0.38, 0.47)

 6-12 mo

− 0.03(− 0.34, 0.28)

−0.05(− 0.38, 0.28)

Low birth weight

 6 mo

0.27(0.03, 0.51)

0.28(0.03, 0.53)

 9 mo

0.14(−0.05, 0.34)

0.16(−0.04, 0.37)

 12 mo

0.18(0, 0.40)

0.21(0.01, 0.43)

 0-6 mo

0.35(0.03, 0.66)

0.34(0.01, 0.66)

 6-12 mo

−0.12(−0.34, 0.11)

−0.13(− 0.36, 0.09)

  1. Values were expressed as the difference in low SES compared with high SES. Model 1 did not adjust any confounders. Model 2 adjusted maternal age, pregnancy BMI, physical activity during pregnancy, paternal BMI as well as alcohol use, paternal smoking status, breastfeeding duration and delivery mode