Table 2.

Outcome Differences Between Intervention (n=53 Classrooms, 1,101 Students) and Comparison Conditions (n=54 Classrooms, 1,156 Students)

	Pre-test			Post-test
Outcome	Intervention mean, % at risk (95% CI)	Comparison mean, % at risk (95% CI)	p-value	Intervention mean, % at risk (95% CI)	Comparison mean, % at risk (95% CI)	p-value	OR (95% CI)
Continuous tobacco susceptibility	1.57 (1.54, 1.60)	1.56 (1.53, 1.59)	0.76	1.53 (1.50, 1.57)	1.63 (1.60, 1.66)	<0.001	NA
Dichotomous tobacco susceptibility, %	17 (14, 19)	14 (11, 17)	0.17	12 (9, 14)	17 (14, 20)	0.003	0.63 (0.46, 0.86)
Normative beliefs, %	25 (22, 29)	26 (22, 30)	0.82	25 (21, 29)	28 (24, 32)	0.31	0.85 (0.63, 1.16)
Outcome expectations, %	20 (17, 23)	18 (15, 21)	0.25	19 (16, 21)	25 (22, 28)	0.002	0.69 (0.55, 0.87)
Knowledge, %	27 (24, 30)	30 (26, 33)	0.27	24 (20, 27)	31 (28, 35)	0.002	0.67 (0.53, 0.86)
Intentions, %	14 (11, 17)	11 (9, 14)	0.17	11 (9, 13)	16 (13, 18)	0.006	0.68 (0.51, 0.89)

Note: Boldface indicates statistical significance (p<0.05)

NA, not applicable.