Results
A total of 494 patients were eligible for final analyses, of them 429 (86.8%) were male and 65 (13.2%) were female. The mean age of the patients was 64.3±9.2 years (range 59.0-70.0 years).
The open RC 419(85.3%) was performed more frequently compared with laparoscopic approach 72(14.7%) (p=0.008). The median follow-up time was 24 months (12-132 months).
Among 494 patients, 202 (40.9%) had normal BMI (Group 1), 215 (43.5%) were over-weighted (Group 2) and 77 (15.6%) were obese (Group 3) at the time of surgery. Demographic and clinical characteristics of these groups are presented in Table 1 . These BMI groups were similar in terms of characteristics in Table 1 , except gender and ECOG performance status (p=0.002 and p<0.001 respectively). We found that ECOG performance status 0 and 1 was statistically significantly higher in Group 1 and Group 3, respectively (p=<0.001)