Table 3.

Results of multivariate analysis of variance indicating main effects of independent variables on smokers’ interest in cessation treatments

Multivariate			Univariate
Independent variable	Pillai trace	Pa	Dependent variable	F	df	Pb
Quit date	4.21	<.001	Pharmacotherapy	4.11	4, 938	.003
			Interpersonal–supportive	4.04	4, 938	.003
			Nonsocial–informational	8.10	4, 938	<.001
Used a quitline before	3.79	<.001	Pharmacotherapy	4.18	2, 938	.016
			Interpersonal–supportive	8.69	2, 938	<.001
			Nonsocial–informational	1.26	2, 938	.28
Smoking rate	1.95	.04	Pharmacotherapy	3.02	3, 938	.03
			Interpersonal–supportive	2.74	3, 938	.04
			Nonsocial–informational	1.48	3, 938	.22
Age group	2.48	.008	Pharmacotherapy	3.30	3, 938	.02
			Interpersonal–supportive	0.31	3, 938	.82
			Nonsocial–informational	2.50	3, 938	.06
Race	2.59	.006	Pharmacotherapy	0.31	3, 938	.82
			Interpersonal–supportive	6.71	3, 938	<.001
			Nonsocial–informational	1.64	3, 938	.18
Education level	2.16	.02	Pharmacotherapy	2.15	3, 938	.09
			Interpersonal–supportive	3.37	3, 938	.02
			Nonsocial–informational	0.84	3, 938	.47

^a Indicates significance of multivariate relationship between the independent variable and the set of 3 dependent variables.

^b Indicates significance of univariate relationship between the independent variable and each dependent variable.