Variable	Category	Frequency	Percentage
Drinking alcohol	No	139	51.5
Drinking alcohol	Yes	131	48.5
Drinking within the past 12 months	No	0	0
Drinking within the past 12 months	Yes	131	48.5
Drinking within the past 30 day	No	42	15.6
Drinking within the past 30 day	Yes	89	33.0
Degree of drinking	Always	0	0
	Sometimes	119	44.1
	Stopped sometime before	12	4.4
Smoking status	No	264	97.8
Smoking status	Yes	6	2.2
Smoking within the past 12 months (6)	No	0	0
Smoking within the past 12 months (6)	Yes	6	100
Smoking within the past 30 days (6)	No	6	100
	Yes	0	0
	Sometimes	6	100
Kchat chewing	No	270	100
Kchat chewing	Yes	0	0
Drug use	No	270	100
Drug use	Yes	0	0
Existence of a boy/girl friend	No	214	79.3
Existence of a boy/girl friend	Yes	56	20.7
Exposure to pornographic movies	No	172	63.7
Exposure to pornographic movies	Yes	98	36.3
Existence of open family discussion about reproductive health issues	No	202	74.8
	Yes	68	25.2
Parental supervision	No	199	73.7
Parental supervision	Yes	71	26.3
Peer pressure	No	200	74.1
	Yes	70	25.9