The prevalence of overweight and obesity was increasing among age groups (prevalence ratio = 1.70, 95% confidence interval (1.63 - 1.78), p < 0.01); higher in boys (prevalence ratio = 1.40, 95% confidence interval (1.32 - 1.48), p < 0.01), or public kindergarten children (prevalence ratio = 1.10, 95% confidence interval (1.01 - 1.14), p = 0.01) and the difference was statistically significance.