Table 1. Participants’ demographic characteristics.

Variable	N = 299
	n	%
Age (years old) (mean±SD = 15.02±1.75)
12~15	160	53.51
15~18	139	46.49
Gender
Male	143	47.83
Female	156	52.17
Grade in school
Junior high	104	34.78
Senior high	195	65.22
School
Private	93	31.10
Public	206	68.90
Residency
Cangkringan District	162	54.18
Others	137	45.82
Religion
Muslim	294	98.33
Non-Muslim	5	1.67
Living arrangement
With parents	278	92.98
With others	21	7.02

SD, standard deviation