IDF21-0226 Cultural and Linguistic Validation of Asian Diabetes Quality of Life Scale to Filipino

Abstract

Background: Diabetes mellitus (DM) is a serious health issue in every nation of the world. The quality of life of Diabetic patients are sometimes compromised because of the numerous medications being taken and as a sequela of the diabetic complications. There is a need for a validated Filipino translated quality of life questionnaire that can be used by researchers in the Philippines. Aim: To provide a validated Filipino version of the Asian Diabetes Quality of Life Scale. Method: This is a Linguistic Validation study utilizing the principles as set forth in the “Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes (PRO) Measures: Report of the ISPOR Task Force for Translation and Cultural Adaptation” for Linguistic and Cultural Validation. Permission was given by the author of the original questionnaire for the translation. Content validation was done using a panel of ten experts. cognitive interview was done using 30 intended participants. Test Retest reliability was done using 30 intended subjects given the questionnaire one week apart. For the Content and Cultural Validity, ICVI, SCVI UA, and SCVI Ave were computed. For the Comprehension. Comprehension Index was computed. For the Test Retest reliability Bland Altman’s Plot was generated together with Pearson’s Correlation. Results: The Item Content Validity Index showed a score of 1.00 except for two numbers who showed a score of 0.80 and 0.90 on clarity. The SCVI universal agreement and average also showed a score of 1.00 for representativeness, relevance and appropriateness. The comprehension index average is also high at 0.97 while the average clarity index is 0.96. The per item Cronbach’s Alpha score ranged from 0.86 – 0.89 with no item lower than 0.70 while the overall Cronbach’s Alpha score is 0.88. The test retest reliability showed a Bland Altmann Plot repeatability correlation of 0.8131 and a Pearson’s correlation of 0.8202. Discussion: The Validity and reliability testing of the Filipino version of the Asian Diabetes Quality of Life questionnaire has a higher validity and reliability score as compared to the original English version making it a valid and reliable armamentarium for researchers who would want to measure the quality of life of Filipino patients with type 2 diabetes.