Of the 138 patients assessed at 6 months with urodynamic studies , 14 of 67 ( 21 % ) had urodynamic stress incontinence in the TVT group compared with 32 of 71 ( 45 % ) in the transobturator tape group ( P = .004 ) , with nine women in the transobturator tape group having repeat sling surgery compared with none in the TVT group .
