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Table 4 Analysis of variance from marginal models (generalized estimating equation, GEE) for repeated measured data of categorical dependent variables (obesity, normal weight and underweight)

From: The association between breastfeeding and childhood obesity/underweight: a population-based birth cohort study with repeated measured data

Source

DF

Chi-Square

P value

Intercept

2

581,902.8

 < 0.0001

Time (age)

10

1308.29

 < 0.0001

Group (infant feeding modalities)

2

11.47

0.0032

Time*Group

10

136.26

 < 0.0001

Residual

0

  
  1. Marginal Models were conducted to investigate changes in the dependent variable over time (1, 2, 3, 4, 5, and 6 years old), and to compare these changes across groups (breast feeding and exclusive formula feeding), and also to test whether there was multiplicative interaction between time and group