RESULTS	PLM during sleep with arousal index ( PLMSAI ; 8.57 / h to 2.47 / h under rotigotine , 6.5 / h to 4.95 / h under placebo ; adjusted treatment difference : -3.12 ( 95 % CI [ -5.36 , -0.88 ] , p = 0.0072 ) also improved more under rotigotine .\