Reliability and validity of the Malay version of the International Prostate Symptom Score in the Malaysian population

• Published in: The Journal of urology Vol. 167; no. 3; p. 1359
• Main Authors: Quek, Kia Fatt, Low, Wah Yun, Razack, Azad Hassan, Sin Loh, Chit, Chua, Chong Beng
• Format: Journal Article
• Language: English
• Published: United States 01.03.2002
• Subjects: Aged; Aged, 80 and over; Asian Continental Ancestry Group; Humans; Malaysia; Male; Middle Aged; Prostatic Hyperplasia - diagnosis; Prostatic Hyperplasia - ethnology; Reproducibility of Results; Sensitivity and Specificity; Malaysia
• ISSN: 0022-5347; 1527-3792
• DOI: 10.1016/S0022-5347(05)65300-1

We validated the Malay version of the International Prostate Symptom Score in patients with and without urinary symptoms in the Malaysian population. 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 alpha. 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. 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 alpha 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 effects of treatment. Significant change from baseline to posttreatment scores was observed in all 8 items in the treated but not in the control group. The Malay International Prostate Symptom Score is a suitable, reliable, valid instrument that is sensitive to clinical change in the Malaysian population.