Two weeks post-intervention , intervention group participants scored significantly higher on the OPTION scale ( adjusted group difference = 18.9 , 95 % CI 12.4 to 25.4 ) , ACEPP items ( difference = 0.9 , 95 % CI 0.5 to 1.3 ) , confidence measure ( difference = 13.1 , 95 % CI 8.5 to 17.7 ) , and the PPOS sharing subscale ( difference = 0.2 , 95 % CI 0.1 to 0.5 ) .