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Table 2 Estimates (standard errors) of height and growth curve models fitted to boys and girls

From: Does the timing of parental migration matter for child growth? A life course study on left-behind children in rural China

  Boys Girls
Fixed effects Model 1a Model 2b Model 1a Model 2b
Intercept 115.70 (0.35) 116.68 (0.96) 115.76 (0.41) 117.14 (1.05)
Age (mean centred at age 7) 6.58 (0.06) 6.41 (0.07) 6.67 (0.06) 6.55 (0.07)
Age2 −0.14 (0.01) −0.16 (0.01) −0.19 (0.01) −0.20 (0.01)
Left-behind stage (reference group never left behind child aged 7)
Never left behind 0 0 0 0
In early childhood only 2.62 (0.91) 1.99 (0.80) −0.82 (1.09) −0.21 (0.93)
In early and later childhood −1.51 (1.25) −0.25 (1.05) −1.94 (1.42) 0.06 (1.17)
In later childhood only −1.64 (0.79) −0.40 (0.66) −2.03 (0.92) −0.40 (0.76)
Deviance statistics 16.63 7.15 6.10 0.31
P-value for Chi-square (df = 3) <0.01 0.07 0.11 0.96
Interactions (reference group never left behind child aged 7):
Age × Left-behind stage:     
In early childhood only 0.17 (0.23) 0.01 (0.22) −0.42 (0.21) −0.46 (0.20)
In early and later childhood −0.23 (0.23) −0.38 (0.23) 0.02 (0.22) −0.19 (0.23)
In later childhood only −0.35 (0.14) −0.36 (0.14) 0.03 (0.15) −0.08 (0.16)
Age2 × Left-behind stage:     
In early childhood only −0.09 (0.04) −0.10 (0.04) 0.01 (0.04) 0.00 (0.04)
In early and later childhood 0.07 (0.05) 0.08 (0.05) 0.05 (0.05) 0.05 (0.05)
In later childhood only 0.03 (0.03) 0.03 (0.03) −0.00 (0.03) −0.00 (0.03)
Deviance statistics 18.31 18.94 5.86 6.79
P-value for Chi-square (df = 6) 0.01 <0.01 0.44 0.34
−2 Log likelihood 9357.00 9138.48 6872.58 6681.72
  1. aAdjusts for age, age2, left-behind stages, and the interaction effects between age × left-behind stage, and age2 × left-behind stage
  2. bAdditionally adjusts for covariates, e.g., gender, only child, child insurance, maternal education, maternal height, household size, household income per capita, asset score, wave, and province, which are not reported here