245 Identifying surgical factors predicting postoperative urinary continence in robot-assisted radical prostatectomy Appendix Appendix 1 matching scores per pair of patients. The patients were matched based on age (difference of < 5 years = 1 matching point), BMI (difference <3 points = 1 matching point), date of the surgery (difference <90 days = 1 matching point), and preoperative intentions of saving the neurovascular bundles during surgery on both sides (NVB sparing the same in bot patients = 1 matching point). Study # incontinent Study # continent pair Difference OR date (days) Match point OR date Difference BMI (points) Match point BMI Difference age (years) Match point age Difference NVB Match point NVB Total score match point Matched pair selected (yes/No) 82 84 38 1 1.20 1 3 1 None 1 4 Y 212 213 1 1 2.05 1 3 1 None 1 4 Y 140 143 42 1 1.45 1 13 0 None 1 3 Y 167 153 89 1 0.59 1 4 1 None 1 3 Y 116 107 90 1 0.44 1 7 0 None 1 3 Y 147 155 130 0 1.42 1 1 1 None 1 3 Y 128 129 7 1 1.23 1 1 1 None 1 4 N 136 141 50 1 0.15 1 10 0 None 1 3 N 140 155 203 0 0.88 1 7 0 None 1 2 N 32 30 2 1 0.13 1 13 0 None 1 3 N 200 178 276 0 0.02 1 2 1 None 1 3 N 116 121 49 1 5.13 0 0 1 None 1 3 N A total 12 possible match pairs were identified for the 10 incontinent patients. The match pairs 82/84, 128/129, and 212/213 were chosen because of their maximum match score of 4. During review the video of patient 129 did not work, this was a reason to exclude this matched pair and replace it with another matched pair. Individual patients were part of multiple matched pairs in case of five matched pairs (147/155, 140/155, 140/143 and 116/121, 116/107). Of these matched pairs 140/155 was not chosen because match pair 140/143 matched better on date of the surgery which reduces the influence of the learning curve on the postoperative results. Match pair 147/155 was chosen because there is a shorter interval between dates of the surgery compared to 140/155. Match pair 116/121 was not chosen because match pair 116/107 matched similar on date of the surgery and better on BMI of the patient which could reduce the influence of BMI on the postoperative results. The match pairs 140/143, 167/153, and 116/107 were chosen because they matched on the date of the surgery and BMI. Match pair 200/178 was not chosen because of the large interval between dates of the surgery which could increase the influence of the learning curve on the postoperative results.
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