Visual Analogue Scale and Expanded Prostate Cancer Index Composite-26 in the Evaluation of Urinary Continence Recovery After Three-Dimensional Laparoscopic Radical Prostatectomy, a Single-Center Prospective Registered Study

Abstract

To assess the correlation between the Visual Analogue Scale (VAS) and the Expanded Prostate Cancer Index Composite (EPIC)-26 in the evaluation of urinary continence (UC) recovery after 3-dimensional laparoscopic radical prostatectomy (3D-LRP). 105 men underwent 3D-LRP in Seinäjoki Central Hospital Finland between November 2018 and February 2021. VAS forms and EPIC-26 questionnaires were used to assess UC preoperatively and at 6 weeks, 3-, 6-, 9-, 12-, 15-, 18-, 21-, and 24 months postoperatively. On the VAS form, the patient put a mark on the 10cm long horizontal line in place, which described his experienced degree of UC (0cm; fully incontinent-10cm; fully continent). The scores for the urinary incontinence domain of EPIC-26 (UI-EPIC-26) were calculated and transformed to a scale of 0-100. Spearman´s rank correlation coefficient was used to evaluate the correlation between the VAS and UI-EPIC-26. A total of 915 VAS forms and 909 EPIC-26 questionnaires were evaluable. UC improved significantly during the first year but not after that. The medians for UI-EPIC-26 and VAS were 50.8 (0-100) and 7.2cm (0-10cm) at 3 months, 76.8 (14.5-100) and 8.7cm (1.7-10cm) at 12 months and 79.6 (8.25-100) and 9.0cm (2.7-10cm) at 24 months. The correlation coefficient (95% confidence interval) between VAS and UI-EPIC-26 preoperatively, at 12 months and at 24 months was 0.639 (0.505-0.743), 0.807 (0.716-0.871), and 0.831 (0.735-0.894), respectively (P<0.001). The VAS can be utilized as an easy-to-use alternative to the EPIC-26 when evaluating UC recovery after 3D-LRP.