Urology Research & Practice
Original Article

The Modified Urdu version of International Prostate Symptom Score: A psychometric validation study

1.

Punjab University College of Pharmacy, University of the Punjab, Lahore, Pakistan

2.

Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia

3.

School of Pharmacy, Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia

4.

National Hospital and Medical Center, Lahore, Pakistan

Urol Res Pract 2018; 44: 335-340
DOI: 10.5152/tud.2018.44834
Read: 1158 Downloads: 493 Published: 25 July 2019

Abstract

 

Objective: The objective of the current study was to develop an Urdu version of the International Prostate Symptom Score (IPSS-U) and validate it for Pakistani patients suffering from lower urinary tract symptoms (LUTS).

 

Material and Methods: IPSS-U was developed by a two-step forward and back translation and to evaluate its psychometric properties, a prospective study involving patients suffering from LUTS (n=267) was conducted at Outpatient Urology Department, Mayo Hospital, Lahore, Pakistan. Internal consistency and reproducibility were assessed using Cronbach's alpha and the Intra-Class Correlation Coefficient (ICC). Moreover, exploratory, and confirmatory factor analyses were performed to determine dimensionality of IPSS-U items.

 

Results: Overall reliability of IPSS-U was satisfactory (Cronbach’s alpha=0.72, ICC of symptom questions=0.92 and ICC of QOL index=0.75). Exploratory factor analysis revealed that two factors were consistent, which together explained 59.8% of the variance. IPSS-U items 1, 3, 5 and 6 were components of the first factor whereas item 2, 4 and 7 were components of the second factor. All the items loaded high on their factors and there were no cross loadings. Moreover, confirmatory factor analysis also showed two-factor model, with acceptable fitting patterns.

 

Conclusion: IPSS-U is a valid and reliable non-gender specific instrument to assess the frequency and severity of LUTS in Urdu-speaking population.

 

Cite this article as: Salman M, Khan AH, Syed Sulaiman SA, Hughes J, Khan JH, Hussain K. The Modified Urdu version of International Prostate Symptom Score: A psychometric validation study. Turk J Urol 2018; 44: 335-40.

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