Table 3.

Multivariate analysis

	Univariate†		P value	Multivariate‡		P value
	Intervention (n=1,338)	Control (n=1,347)		Intervention (n=1,207)	Control (n=1,126)
Pro-donation beliefs*
Adjusted posttest mean	5.4	5.2	0.08	5.5	5.2	0.04
Altruism†
Adjusted posttest mean	5.5	5	0.01	5.5	5.1	0.01
Cultural responsibility†
Adjusted posttest mean	3.6	3.5	0.84	3.6	3.5	0.71
Donation status
Odds (95% CI)	1.7 (0.997–2.9)	1	0.051	1.7 (0.997–2.8)	1	0.051

^*Sample size for attitude scales was 1,216 for univariate and multivariate 1,099 analyses.

^†Adjusted for baseline value and clustering by salon.

^‡For multivariate analyses, we adjusted for pretest scale scores, city, age, sex, insurance group, education and clustering by salon.