And the scores of PASS , BBA , BBS , FMA and MBI were ( 9 3 , 8.3 2.4 , 37 7 , 22 5 , 73 13 ) in four-channel FES group versus ( 21 7 , 6.2 3.1 , 24 16 , 15 8 , 47 20 ) in comfort electrical stimulation group .