RELIABILITY AND VALIDITY OF THE MALAY VERSION OF THE INTERNATIONAL PROSTATE SYMPTOM SCORE IN THE MALAYSIAN POPULATION

Purpose: We validated the Malay version of the International Prostate Symptom Score in patients with and without urinary symptoms in the Malaysian population.Materials and Methods: Validity and reliability were studied in patients with and without lower urinary tract symptoms. Reliability was evaluated using the test-retest method and internal consistency was assessed by Cronbach’s α. Sensitivity to change was expressed as the effect size in the pre-intervention versus post-intervention score in additional patients with lower urinary tract symptoms who underwent transurethral prostate resection.Results: Internal consistency was excellent. A high degree of internal consistency was observed for each of the 7 items and for the total score (Cronbach’s α 0.53 and greater, and 0.68, respectively). The test-retest correlation coefficients of the 7 items were highly significant. The intraclass correlation coefficient was high at 0.51 and greater. There was a high degree of sensitivity and specificity to the effec...