approached significancep = 0.054
For the average overall postdose time points, the PERMP total number of problems attempted was significantly greater for subjects treated with MPH ERCT compared with subjects treated with placebo (LS mean difference [95% confidence interval], 24.5 [4.4, 44.7]; p = 0.017); the treatment difference for total number correct approached significance (20.5 [−0.3, 41.4]; p = 0.054).