Table 3.

Cohen’s d Effect Sizes of Raw Means Between-Conditions for each Outcome Measure

	ET OLT vs. ET OLT + MI		ET OLT vs. Control OLT		ET OLT + MI vs. Control OLT
	Post-Training	One-Week F/U	Post-Training	One-Week F/U	Post-Training	One-Week F/U
Knowledge	0.17	0.11	2.26*	1.68*	3.29*	2.01*
Self-efficacy	0.54	0.77	1.51*	1.19*	1.95*	1.96*
Motivation	0.06	0.16	0.41	0.09	0.36	0.21
Attitudes	0.04	0.35	0.72	0.72	0.86*	0.95*
Credibility	0.28	0.50	0.35	0.06	0.57	0.56
Action	0.16	0.23	0.95*	1.15*	0.69*	1.39*
Skills use	–	0.35	–	0.44	–	0.07

Note. Interpretation of Cohen’s d: .20 small effect, .50 medium, and .80 large (Cohen, 1988). Effect sizes with an asterisk represent statistically significant differences. F/U = follow-up.