. Author manuscript; available in PMC: 2011 Mar 1.

Published in final edited form as: J Natl Med Assoc. 2010 Mar;102(3):164–171. doi: 10.1016/s0027-9684(15)30521-6

Table 3.

Change in main outcome variables

Outcomes	Pre-test	Post-test	Change	^*p-value

	Mean (sd)	Mean (sd)	Mean (sd)
Prostate cancer knowledge score (n=35) (range: 0-100)	22.5 (13.3)	48.2 (19.9)	25.7 (16.9)	<0.0001
Decision self-efficacy score (n=48) (range: 0-100)	83.6 (23.2)	92.5 (15.5)	8.9 (19.6)	0.025
Decisional conflict score (n=48) (range: 0-100)	47.7 (14.3)	42.3 (17.8)	-5.5 (16.2)	0.097
Control preference (n=67)	N (%)	N (%)
% active	40 (59.7)	54 (76.1)	14 points	<0.0001
% collaborative	23 (34.3)	12 (16.9)	-11 points
% passive	4 (5.9)	5 (7.0)	1 points

p-value for Pooled t-test for equal variances

Only a subset of participants completed each questionnaire; the same 48 participants completed Decision self-efficacy and Decisional conflict scales.