Table 3.

Comparison of Post-Intervention Impressions in Intervention and Control Arms.

Post-Intervention Perception*	Intervention (N = 410)	Control (N = 386)	Cohen’s d	p-value
The instructor was knowledgeable	2.23	2.23	0.00	.94
I learned a lot during this program	2.21	2.11	0.13	.08
I enjoyed this program	2.05	1.91	0.18	.01
I would like more programs like this one	1.95	1.85	0.13	.08
I would recommend this program to a friend	1.92	1.86	0.07	.26
I participated in this program	1.94	1.83	0.14	.06
This program kept my attention	2.01	1.78	0.29	<.001
I am less likely to smoke now that I have seen this program	2.17	2.05	0.14	.06
This program would be effective in getting kids not to smoke	2.00	1.88	0.14	.04
I will look at smoking differently from now on	2.07	1.87	0.23	.001
I will look at advertising differently from now on	2.09	1.86	0.26	<.001

^*Post-intervention perceptions were scored with continuous figures from 0 (strongly disagree) to 3 (strongly agree).