Table 1. Number of participants and age (mean and SD) categorized by age group and gender across risk groups (HR and LR).

Mean ages between LR and HR groups have been compared using t-tests.

Gender	Age Group	LR			HR			t-value	p
		N	Age		N	Age
			Mean	SD		Mean	SD
Male	12–15	67	13.34	1.28	319	13.64	1.20	-1.775	0.0737
Male	16–25	62	18.85	1.95	426	19.28	2.20	-1.475	0.1408
Female	12–15	97	13.48	1.18	334	13.67	1.24	-1.329	0.1845
Female	16–25	61	19.22	2.19	455	19.51	2.16	-0.979	0.3281