Ayumi Sugawara Hirose1,2, Kazuya Fujihara1,3, Flaminia Miyamasu4, Shigeru Iwakabe5, Misa Shimpo5,6, Yoriko Heianza1, Chika Horikawa1,3,7, Yoko Yachi1,8, Hirohito Sone1. 1. 1Department of Hematology, Endocrinology and Metabolism, Faculty of Medicine, Niigata University, 1-757 Asahi-cho, Chuo-ku, Niigata, Niigata Japan. 2. 2Child Studies Department, Faculty of Human Welfare, Seigakuin University, 1-1 Tosaki Ageo, Saitama, Japan. 3. 3Division of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, 3-2-7 Miya-machi, Mito, Ibaraki Japan. 4. 4Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki Japan. 5. 5Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo, Tokyo, Japan. 6. 6Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda, Tokyo, Japan. 7. 7Department of Health and Nutrition, Faculty of Human Life Studies, University of Niigata Prefecture, 471 Ebigase, Higashi-ku, Niigata, Niigata Japan. 8. 8Faculty of Health and Nutrition, Chiba Prefectural University of Health Sciences, 2-10-1 Wakaba, Mihama-ku, Chiba, Chiba Japan.
Abstract
OBJECTIVES: Our objective was to undertake linguistic validation and cultural adaptation of the Japanese version of the Audit of Diabetes-Dependent Quality of Life (JP-ADDQoL) and to evaluate its psychometric properties when completed by Japanese patients with diabetes. METHODS: We followed the standard linguistic validation procedure and subsequently evaluated the reliability (internal consistency) and construct validity (exploratory and confirmatory factor analyses) of the translated version by surveying 239 Japanese patients with diabetes. RESULTS: We translated 19 items for the JP-ADDQoL. The internal consistency was excellent (Cronbach's alpha = 0.933). In the exploratory factor analysis, four factors were extracted, and most of the items in all four factors had high loadings. Forced one-factor analysis revealed all factor loadings other than those for sex life to be >0.40 (sex life: 0.398). Confirmatory factor analysis indicated an acceptable fit for the JP-ADDQoL. CONCLUSIONS: The JP-ADDQoL showed adequate reliability and acceptable validity. Examining not only the impact of diabetes on a specific domain of life but also its importance for each patient leads to more accurate and individualized measurement of the patient's QoL.
OBJECTIVES: Our objective was to undertake linguistic validation and cultural adaptation of the Japanese version of the Audit of Diabetes-Dependent Quality of Life (JP-ADDQoL) and to evaluate its psychometric properties when completed by Japanese patients with diabetes. METHODS: We followed the standard linguistic validation procedure and subsequently evaluated the reliability (internal consistency) and construct validity (exploratory and confirmatory factor analyses) of the translated version by surveying 239 Japanese patients with diabetes. RESULTS: We translated 19 items for the JP-ADDQoL. The internal consistency was excellent (Cronbach's alpha = 0.933). In the exploratory factor analysis, four factors were extracted, and most of the items in all four factors had high loadings. Forced one-factor analysis revealed all factor loadings other than those for sex life to be >0.40 (sex life: 0.398). Confirmatory factor analysis indicated an acceptable fit for the JP-ADDQoL. CONCLUSIONS: The JP-ADDQoL showed adequate reliability and acceptable validity. Examining not only the impact of diabetes on a specific domain of life but also its importance for each patient leads to more accurate and individualized measurement of the patient's QoL.
Entities:
Keywords:
Diabetes mellitus; Quality of life; Questionnaires; Validation