Both the experimental and control groups showed reductions in apathy on the Frontal Systems Behavior Scale between baseline and final assessments ( F1 ,20 = 18.017 , P < .001 , 2 = 0.474 ) , and there was no significant additional reduction in apathy with modafinil ( F1 ,20 = 0.008 , P = .932 , 2 = 0.000 ) .
