480 Fig. 1 Patient flow Excluded (n=140) Not meeting inclusion criteria/ Refused to participate/ other reasons (not exactly specified) Excluded (n=4) 3 patients withdrew just before surgery 1 patient underwent other operation than planned Table 1 Baseline characteristics of the study population Mean age in years Mean BMI in kg/m² History of surgery History of prolapse repair History of hysterectomy History of anterior colporrhaphy History of posterior colporrhaphy History Obstructive micturition Recurrent urinary tract infections Urinary tract infection in pre-operative sedimentation Cystocele (Baden–Walker) I II III Rectocele (Baden–Walker) 0 I II III Technique Kelly sutures Levator sutures Tobacco sutures Concomitant surgery Hysterectomy Posterior colporrhaphy Sacrospinal fixation Mean amount of blood loss in ml (n) number of patients, SD standard deviation 0.57 0.64 0.39 0.90 0.23 0.76 0.86 0.50 0.76 0.86 0.56 0.66 0.99 0.50 0.58 0.66 <0.01 0.15 0.84 0.80 0.44 0.72 0.55 Int Urogynecol J (2011) 22:477–483 Assessed for eligibility colporraphia anterior N=390 Enrollment 250 patients Randomization 246 patients Allocation Analysis 124 x allocated to protocol 2 days 122 x allocated to protocol 5 days Analyzed 124 patients Analyzed 122 patients Protocol 2 days catheterization (n = 124) Protocol 5 days catheterization (n = 122) p value 59.9 (SD 10.2) 26.6 (SD 3.9) 60.7 (SD 11.1) 26.4 (SD 3.9) 9% (11) 20% (25) 3% (4) 5% (6) 30% (37) 8% (10) 5% (6) 11% (14) 35% (43) 54% (67) 37% (45) 34% (42) 21% (25) 8% (11) 36% (44) 27% (33) 17% (21) 53% (65) 46% (57) 15% (19) 241 12% (15) 20% (24) 7% (8) 6% (7) 31% (38) 11% (13) 6% (7) 11% (13) 38% (47) 51% (62) 37% (44) 39% (46) 18% (21) 7% (8) 47% (58) 32% (39) 18% (22) 55% (67) 52% (63) 13% (16) 233