In the 4th and the 8th weeks ' follow-up , numbers in the EA group were still less than those in the routine treatment group [ 9.0 % ( 14/156 ) vs. 18.1 % ( 28/155 ) , 7.7 % ( 12/155 ) vs. 16.9 ( 26/154 ) both P < 0.05 ) ] .