One , 3 and 6 months after operation , the incidence of R-S syndrome in FJI group was lower as compared to R-Y group [ 13 % ( 6/45 ) vs. 37 % ( 18/49 ) , 3 % ( 1/30 ) vs. 42 % ( 14/33 ) , 5 % ( 1/21 ) vs. 48 % ( 11/23 ) , all P < 0.01 ] , while 3 months after operation , the incidence of reflux and heartburn in FJI group was higher [ 53 % ( 16/30 ) vs. 21 % ( 7/33 ) , P < 0.01 ; 37 % ( 11/30 ) vs. 12 % ( 4/33 ) , P < 0.05 ] .