Table 3.

Percentage of non-sexual risk behaviors, by sexual experience, gender and cities

	Ever had sexual intercourse
Risk behaviors	Hanoi		Shanghai		Taipei
	Yes	No	Yes	No	Yes	No
Male	n=3234		n=3034		n=2486
% smoking	75.3	28.8	64.9	20.8	48.8	12.5
ORa	4.6		4.6		7.2
% drinking	88.6	50.3	65.5	32.9	55.7	26.1
ORa	4.2		2.6		2.8
% gambling	40.1	13.2	39.2	13.6	47.8	31.5
ORa	3.4		3.6		2.2
% using drugs	2.3	0.3	3.0	0.6	8.8	1.4
ORa	5.5		5.1		6.0
% ever ran away	29.4	9.2	25.4	9.9	16.0	6.1
ORa	3.6		2.8		3.7
% fighting	18.9	18.0*	19.0	12.8	18.1	14.5
ORa	1.5		2.6		3.4
% of suicidal	4.0	1.5	9.5	6.7	11.9	14.1*
ORa	3.1		1.9		1.0*
Female	n=2921		n=3005		n=2364
% smoking	36.9	0.2	14.7	1.8	20.7	4.5
ORa	240.0b		8.1		6.3
% drinking	64.3	12.7	35.7	16.0	46.0	22.4
ORa	9.3		2.4		2.7
% gambling	26.0	l.5	7.1	3.2	17.4	10.9
ORa	24.0		2.2		1.7
% using drugs	1.3	0.0	1.0	0.1	7.7	0.4
ORa	35.3b		7.7		18.1
% ever ran away	25.5	1.6	12.8	4.9	20.2	5.2
ORa	25.8		2.3		5.0
% fighting	22.9	14.2*	7.5	3.4	10.3	8.0*
ORa	2.6		3.3		1.9
% of suicidal	6.1	2.9*	17.6	8.3	27.0	18.2
ORa	2.7*		2.5		2.2

^a: Adjusted for age, residence, education level, school status and economic status (logistic regression models).

^b: Due to limited number of smokers (total 27) and drug users (total 2), only adjusted for school status in the logistic regression model.

^*p>0.05