Reliability and validity of the Malay version of the International Prostate Symptom Score in the Malaysian population.
OBJECTIVE
We validated the Malay version of the International Prostate Symptom Score in patients with and without urinary symptoms in the Malaysian population.


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 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.


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 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.


CONCLUSIONS
The Malay International Prostate Symptom Score is a suitable, reliable, valid instrument that is sensitive to clinical change in the Malaysian population.
Quek
Kia Fatt
KF
Health Research Development Unit and Department of Surgery, University Malaya Medical Center, Kuala Lumpur and Sunway Medical Center, Selangor, Malaya.
Low
Wah Yun
WY
Razack
Azad Hassan
AH
Sin Loh
Chit
C
Chua
Chong Beng
CB
D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D006801:Humans; D008296:Malaysia; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000175:diagnosis* / Q000208:ethnology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity