RESULTS	Of the 302 group A and 291 group B patients who made an office visit 1 year postoperatively , pain was absent in 231 ( 76.5 % ) and 213 ( 73 % ) ( difference , 3.30 % ; 95 % confidence interval , -3.68 % to 10.28 % ) , mild in 55 ( 18 % ) and 60 ( 21 % ) , moderate in 11 ( 4 % ) and 9 ( 3 % ) , and severe in 5 ( 2 % ) and 9 ( 3 % ) , respectively ( P = .55 ; Pearson chi2 ( 3 ) test ) .\