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Reliability and validity of the Malay version of the International Index of Erectile Function (IIEF-15) in the Malaysian population

International Journal of Impotence Research volume 14, pages 310–315 (2002)Cite this article

Abstract

The objective of this study was to validate the Malay version of the International Index of Erectile Function (IIEF-15) in patients with lower urinary tract symptoms. Reliability and validity was assessed by using the test–retest while Cronbach's alpha was used to assess internal consistency. Effect size 5was evaluated to assess the sensitivity to change in the pre-transurethral resection of the prostate (TURP) vs post-TURP. Internal consistency was excellent. A high degree of internal consistency was observed for each of the 15 items and five domains (Cronbach's alpha value=0.56 and higher and 0.74 and higher, respectively). Test–retest correlation coefficient for the 15 items and domains scores showed no significant changes. Intraclass correlation coefficient for 15 items and domains were high (ICC=0.59 and above). It can be concluded that the Mal-IIEF-15 is suitable, reliable, valid and sensitive to clinical change in the Malaysian population.

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Acknowledgements

The authors wish to thank the Research and Development Management Unit, University of Malaya, Kuala Lumpur for providing the research grant for the study. The authors also thank Dewan Bahasa and Pustaka, Kuala Lumpur for the verification of the questionnaire.

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Authors and Affiliations

  1. Health Research Development Unit, University Malaya Medical Centre, Kuala Lumpur, 50603, Malaysia

    K F Quek & W Y Low

  2. Department of Surgery, University Malaya Medical Centre, Kuala Lumpur, 50603, Malaysia

    A H Razack & C B Chua

  3. Sunway Medical Center and Gleneagles Intan Medical Center, Kuala Lumpur, 50603, Malaysia

    C S Loh

Authors
  1. K F Quek
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  2. W Y Low
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  3. A H Razack
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  4. C B Chua
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  5. C S Loh
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Correspondence to W Y Low.

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Quek, K., Low, W., Razack, A. et al. Reliability and validity of the Malay version of the International Index of Erectile Function (IIEF-15) in the Malaysian population. Int J Impot Res 14, 310–315 (2002). https://doi.org/10.1038/sj.ijir.3900902

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