Fig. 2From: Association of number of siblings, birth order, and thinness in 3- to 12-year-old children: a population-based cross-sectional study in Shanghai, ChinaDistribution of the prevalence of grades 1, 2, and 3 thinness in boys. *Statistically significant difference in prevalence between 0 (only child) and 1 sibling (χ2 test): p < 0.05; #Statistically significant difference in prevalence between 1 and ≥ 2 siblings (χ2 test): p < 0.05; $Statistically significant difference in prevalence between 0 (only child) and ≥ 2 siblings (χ2 test): p < 0.05.Back to article page