Fig. 1From: Intra-observer reproducibility and inter-observer agreement of Fels skeletal age assessments among male tennis players 8–16 yearsA Scatterplot of the SA estimated by Observer B (y-axis) and Observer 2 (x-axis); B Discrepancies between observers plotted against average SA of the two observers (Bland–Altman analysis). Legend: ICC (intra-class correlation coefficient; 95% CI (95% confidence intervals); LLA (lower limit of agreement); ULA (upper limit of agreement)Back to article page