Table 5

Variables associated with early smoking initiation from proportional hazards model analysis for Chinese American and white adolescents

Variables		Chinese				White			Chinese + white
Variables		RR	p			RR	p		RR	p
Social network smoking
Parent smoking	2.81	0.0636		1.11	0.0184		1.11	0.0150
Sibling smoking				1.41	0.0001		1.41	0.0010
Best friend smoking (m)				1.59	0.0001		1.60	0.0010
Best friend smoking (f)				1.63	0.0001		1.64	0.0010
Teacher smoking				1.32	0.0004		1.32	0.0010
Media exposure
Tobacco media exposure				1.47	0.0001		1.47	0.0010
Attitudes toward smoking
Hates being around smokers	0.41	0.1493		0.61	0.0001		0.61	0.0010
Smokers turn me off				0.70	0.0001		0.70	0.0010
Feel OK around smokers	2.72	0.0734		1.37	0.0001		1.37	0.0010
Perceived benefit of smoking
Smoking helps relax				1.24	0.0001		1.24	0.0010
Smoking alleviates boredom				1.16	0.0020		1.16	0.0010
Perceived parental influence on smoking
Parent's approval of my smoking				1.20	0.0003		1.20	0.0010
Acculturation status
Only English at home							1.77	0.0290
Age in US >6 year	0.88	0.1062		1.73	0.0295		0.95	0.0320
Model test
−2Log(L)	165.236			39350.04			39765.12
DF	5			15			16
p	0.0007			0.0001			0.0001

The result is controlled for age, sex, and year of survey.
Due to the relatively smaller sample size, a criteria of p = 0.15 was used for backward selection in the proportional hazards model analysis for Chinese Americans.