Development and validation of a scoring system for late anorectal side-effects in patients treated with radiotherapy for prostate cancer

To develop and validate a scoring system for evaluation of long term anorectal dysfunction following radiotherapy for prostate cancer.Patients treated for prostate cancer with radiotherapy filled in questionnaires on anorectal function and quality of life. Items for the condensed anorectal dysfunction score (RT-ARD) were identified and weighted by binomial regression analysis. The score was tested in a separate patient material by receiver...