284 Chapter 11 Mean and standard deviation or median and interquartile ranges were reported for continuous variables as indicated, depending on the distribution of the variables. Frequencies and proportions were used to describe categorical variables. The Pearson correlation coefficient test was used to assess the accuracy of the Kinovea measurements comparing them to the pre-operative MRI measurements. The Mann-Whitney U test was used to compare differences between continent and incontinent patients for the continuous variables and Fishers exact test for the categorical variables. Statistical significance was set at p<0.05 based on a two-tailed comparison. Univariate logistic regression analysis of preoperative variables was used to identify factors that have influenced the patient’s continence status. P-value for the univariate logistic regression analysis was set at 0.10. Statistical analysis was performed with SPSS software v. 23 (SPSS Inc., Chicago, IL, USA).Results Figure 1. (A) Intra-operative image – representation of important anatomical structures used as landmarks during the measurements of the urethral stump; (B) intra-operative image – calibration lines overlapping the urethral stump with Foley 16 Ch catheter inserted used as reference structure; (C) axial and F: coronal MRI image - representation of important anatomical structures used as landmarks during the measurements of the urethral stump; (D) MUL, (E) VUL and (G) VUW measurement method on MRI images. A B
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