Urological Science
Volume 21, Issue 4 , Pages 180-184, December 2010

Validity of the Traditional Chinese Version of the King's Health Questionnaire for Taiwanese Patients With an Overactive Bladder

  • Eric Chieh-Lung Chou

      Affiliations

    • Department of Urology, China Medical University Hospital, Taichung, Taiwan
    • ,
  • Yao-Chi Chuang

      Affiliations

    • Department of Urology, Chang Gung Memorial Hospital, Kaohsiung, Taiwan
    • ,
  • Eric Chung-Cheng Wang

      Affiliations

    • Department of Urology, En Chu Kong Hospital, Taipei, Taiwan
    • ,
  • Hann-Chorng Kuo

      Affiliations

    • Department of Urology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
    • Corresponding Author InformationCorresponding author. Department of Urology, Buddhist Tzu Chi General Hospital, 707, Chung-Yang Road, Section 3, Hualien 970, Taiwan

Received 17 January 2010; received in revised form 18 May 2010; accepted 19 July 2010.

Article Outline

Objective

In this study, we tested the validity of the 2009 Chinese version of the King's Health Questionnaire (KHQ) in patients with an overactive bladder (OAB).

Materials and Methods

In 2009, the Taiwan Continence Society commenced linguistic validation and other elements of production required for a Chinese version of the KHQ. Data for the psychometric assessment came from a multicenter clinical trial. Patients who visited urology clinics with OAB and symptoms of urgency frequency with or without urge incontinence were asked to fill out the KHQ at the initial visit and again 1 week later. The internal consistency was measured by Cronbach's alpha statistics. The test-retest method was used to compare the reliability of responses of the two completed questionnaires using Spearman's rank correlation coefficient. An alpha value > 0.70 was considered acceptable.

Results

In total, 55 patients were enrolled, including 37 women and 18 men. Forty-seven (85.5%) patients correctly completed both questionnaires. The alpha values exceeded the minimum requirement for reliability in all domains of the questionnaire, except for the severity measure item (0.60). The internal consistency was also consistently high between tests 1 and 2 in all domains. Test-retest reliability also showed significant correlations between the two tests in all domains.

Conclusion

This study demonstrates that the 2009 Chinese version of the KHQ is a reliable instrument for assessing health-related quality of life in patients with OAB.

Key Words:  overactive bladder , quality of life , questionnaire , reliability , validity

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PII: S1879-5226(10)60040-1

doi:10.1016/S1879-5226(10)60040-1

Urological Science
Volume 21, Issue 4 , Pages 180-184, December 2010

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