RESUMO
Objective To evaluate the reliability and validity of the Chinese version of the King's Health Questionnaire (KHQ) in patients with overactive bladder(OAB).Methods The original English KHQ was translated into Chinese and linguistically validated following the Cross-cultural adaptation of health-related quality of life measures. Patients recruited randomly from urology clinics were scheduled for two visits with 2 weeks apart, and they were surveyed through the Chinese version of the KHQ. Internal consistency reliability was assessed by Cronbach's α test;Test-retest reliability was examined among stable patients using Intraclass correlation coefficient (ICC) and Spearman's rank correlation statistical analyses. Content validity was estimated by Spearman's rank correlation statistical analyses. A factor analysis was conducted to validate the underlying factor structure of the Chinese version of the KHQ. Results A total of 48 OAB patients who met the criteria participated the study, and 40 patients (7 men, 33 women) completed the questionnaires twice. All the subscales and domains of the KHQ showed high levels of internal consistency (Cronbach's a: 0.718-0. 924) , moderate to excellent test-retest reliability (ICC:0.551-0.923,P<0.01) and acceptable construct validity. The content validity was moderate to excellent except for the Social Limitations domain. Conclusion Psychometric testing supports the reliability and validity of the Chinese version of the KHQ as an OAB-specific measure of HR QOL.
RESUMO
In a common saying, “good sleep, good eating, and good defecation” is a synonym to wellness of human health. Not only the absence of gastrointestinal (GI) symptoms but also a good appetite and comfortable defecation are necessary for the wellness of health. Such wellness or well-being is now called health-related quality of life (HR-QOL). Generic QOL scales consistently indicate disturbed QOL in patients with GI symptoms, which correlates well with the specific QOL for many GI disorders, showing that the presence of GI symptoms contributes disturbance in HR-QOL, proving that a good appetite is critical for HR-QOL.