Fig. 3From: Accelerated skeletal maturation is associated with overweight and obesity as early as preschool age: a cross-sectional studyOverlaid histograms of relative SA distributions under different BMI groups. The dotted line represents the mean value of each BMI group: thinness (a), normal-weight (b), overweight (c) and obese (d) group. The solid line at position 0 indicates that relative SA = 0 (SA = chronological age [CA]). The solid curve represents the normal distributionBack to article page