Date of Award


Document Type


Degree Name

Master of Medicine (MMed)

First Supervisor/Advisor

Ali Akbar Zehri

Second Supervisor/Advisor

Philip Adebayo

Third Supervisor/Advisor

Athar Ali


General Surgery (East Africa)


Background: Benign prostatic hyperplasia is a common condition encountered in men who are 50 years and above, presenting in hospitals for evaluation of lower urinary tract symptoms. The International Prostate Symptom Score is one of the questionnaires used to assess these symptoms. However, this questionnaire has not yet been validated among patients with Benign Prostate Hypertrophy in the Tanzanian setting.

Objectives: The primary objective of this study was to assess the validity of the Swahili version of the IPSS questionnaire among patients with benign prostatic hyperplasia.

Methods: We employed a cross-sectional study design in patients that presented at the Aga Khan Hospital, Dar es Salaam, Tanzania with lower urinary tract symptoms. To validate our Swahili version of the International Prostate Symptom Score questionnaire validity and reliability were calculated. The validity of the questionnaire was established with face validity and discriminant validity. The reliability of the questionnaire was established by assessing the test-retest reliability and the internal consistency of the Swahili version of International Prostate Symptom Score questionnaire. The sensitivity to change was assessed using paired T- test. Correlation coefficients were presented in tables in the relevant domain.

Results: There was excellent internal consistency observed between the Swahili International Prostate Symptom Score and the original International Prostate Symptom Score with a Cronbach’s α of 0.86 and 0.919 respectively. Test-retest reliability showed high inter class correlation of 0.84. The average improvement after treatment on the Swahili International Prostate Symptom Score was 9.69 ± 6.36.

Conclusion: The Swahili International Prostate Symptom Score is reliable, valid and sensitive to change in the Tanzanian population.

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Surgery Commons