A score of .2.75 ( equal to a mean subscale score of .11.00 ) on the ROMI scale Perceived Medication Benefit factor at Week 2 predicted response at Week 8 with high specificity ( 72 % ) and negative predictive value ( 70 % ) , moderate sensitivity ( 44 % ) and positive predictive value ( 47 % ) , and with a 38 % misclassification rate .
