The Cohen 's d effect size in reduction of decisional conflict was moderate to high for the intervention group compared to routine education ( 0.69 , 95 % CI = 0.02-1 .42 ) , while the effect sizes of increase in decision self-efficacy ( 0.05 , 95 % CI = -0.60 -0.71 ) and satisfaction with information ( 0.11 , 95 % CI = -0.53 -0.76 ) were small .