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Table 3 Model BMI trajectories by sex over life course

From: Shifting educational gradients in body mass index trajectories of Indonesians: an age period cohort analysis

  Model BMI trajectory by sex with 95% CI
# of obs 60,531
# of groups 14,810
Fixed effect
 Mean BMI (intercept) at age 20 19.218*** [19.070–19.365]
 Rate of change by one unit of age 0.162 *** [0.153–0.172]
 Changing in rate by one unit of age -0.002*** [-0.002-(-0.002)]
 Sex-(ref group Male) 0.121 [-.074–0.315]
 Interaction sex-age 0.067*** [0.054–0.079]
 Interaction sex—age square -0.001*** [-0.001-(-0.0003)]
Random effect
 Level I—within person
  variance residual 2.750 [2.706–2.794]
 Levell II—between person   
  variance initial BMI (intercept) 9.275 [8.823–9.751]
  variance rate of change (slope) 0.013 [0.013–0.014]
  cov(intercept & slope) -0.073 [-0.087-(-0.059)]
  p-value random effect   
Goodness of fit
 Log likelihood -143,188.790  
 AIC 286,397.600  
 BIC 286,487.700  
  1. *** p-value significant < 0.001