Eiko Sato1, Ryota Ochiai2, Taiga Shibayama3, Masakazu Nishigaki4, Yoshiki Abe3, Tasuku Sawa5, Yoshimi Suzukamo6, Keiko Kazuma7. 1. 1Department of Nursing, Ashikaga Institute of Technology, 268-1 Omae-cho, Ashikaga, Tochigi Japan. 2. 2Department of Nursing, Graduate School of Medicine, Yokohama City University, Yokohama, Japan. 3. 3Faculty of Medicine, University of Tsukuba, Tsukuba, Japan. 4. 4Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan. 5. Sawa Internal Medicine and Diabetes Clinic, Fujisawa, Japan. 6. 6Department of Physical Medicine and Rehabilitation, Graduate School of Medicine, Tohoku University, Sendai, Japan. 7. 7Former Department of Adult Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Abstract
OBJECTIVE: To develop both a revised version of the Diabetes Diet-Related Quality of Life (DDRQOL-R) scale that can be applied to patients with nephropathy and a short form of the DDRQOL-R. METHOD: A total of 184 outpatients with type 2 diabetes were asked to complete the self-administered DDRQOL-R scale to confirm its psychometric properties. A short-form version was developed, based on two methods: the result of the developed DDRQOL-R scale and consensus using the Delphi method among medical experts. RESULTS: Correlations were generally strong between the DDRQOL-R factors extracted by factor analysis and each SF-36 subscale. Cronbach's α coefficients were at least 0.7, and intraclass correlation coefficients were between 0.59 and 0.78. The nine items that showed high factor loadings were also assessed as important by the medical experts and were selected for the short form of the scale. The reliability and validity of the short form were found to be similar to those of the DDRQOL-R scale. DISCUSSION: Our findings indicate that the DDRQOL-R scale and its short form have acceptable reliability and validity. The revised version is highly versatile, and the short form can be conveniently administered.
OBJECTIVE: To develop both a revised version of the Diabetes Diet-Related Quality of Life (DDRQOL-R) scale that can be applied to patients with nephropathy and a short form of the DDRQOL-R. METHOD: A total of 184 outpatients with type 2 diabetes were asked to complete the self-administered DDRQOL-R scale to confirm its psychometric properties. A short-form version was developed, based on two methods: the result of the developed DDRQOL-R scale and consensus using the Delphi method among medical experts. RESULTS: Correlations were generally strong between the DDRQOL-R factors extracted by factor analysis and each SF-36 subscale. Cronbach's α coefficients were at least 0.7, and intraclass correlation coefficients were between 0.59 and 0.78. The nine items that showed high factor loadings were also assessed as important by the medical experts and were selected for the short form of the scale. The reliability and validity of the short form were found to be similar to those of the DDRQOL-R scale. DISCUSSION: Our findings indicate that the DDRQOL-R scale and its short form have acceptable reliability and validity. The revised version is highly versatile, and the short form can be conveniently administered.
Entities:
Keywords:
Diabetes; Diet therapy; Diet-related quality of life; Scale development
Authors: William H Polonsky; Lawrence Fisher; Jay Earles; R James Dudl; Joel Lees; Joseph Mullan; Richard A Jackson Journal: Diabetes Care Date: 2005-03 Impact factor: 19.112
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