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

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 trans...

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Bibliographic Details
Published in:Turkish journal of urology 2018-07, Vol.44 (4), p.335-340
Main Authors: Salman, Muhammad, Khan, Amer Hayat, Sulaiman, Syed Azhar Syed, Hughes, Jeffery, Khan, Junaid Habib, Hussain, Khalid
Format: Article
Language:English
Subjects:
Discriminant analysis
General Urology
Quantitative psychology
Urology
Validation studies
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Summary: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.
ISSN:2149-3235
2149-3057
2980-1478
DOI:10.5152/tud.2018.44834