Table 2. Mean PI comparison according to Tanner Stage.

	Tanner 1*	Tanner 2	Tanner 3	Tanner 4*	Tanner 5	p-value
Mean PI	4.8 SD 1.3	3 SD 4.2	4.1 SD 1.1	2.7 SD 1.3	3.5 SD 2.1	0.012

^*Kruskal-Wallis with post hoc Bonferroni test