Table 3.

Mental health-related stigma reduction

Stigma Reduction	N	Mean (Pre-test)c	SD (Pre-test)	Mean (Post-test)d	SD (Post-test)	Mean Change (Pre-Post)e	SD (Change)	F	Pr>F	Effect Sizef
Montanaa	236	9.09	4.79	7.94	4.3	−1.16	4.6	14.90	0.001	−0.251
Texasb	143	16.59	4.06	15.26	4.24	−1.33	3.74	18.13	<0.001	−0.356

^aRIBS scale: each item had ~13.6% of values missing at baseline, and 2% at follow-up.

^bPersonal Stigma scale: each item had ~4.7% of values missing at baseline, and 2% at follow-up.

^cMean and standard deviation for pre-test scores among students who completed ≥ 80% of items

^dMean and standard deviation for post-test scores among students who completed ≥ 80% of items

^eMean and standard deviation for change (post-test minus pre-test scores) among students who completed > 80% of items

^fCohen’s d using the raw change scores.