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Japanese version of the family dermatology life quality index: translation and validation

Higaki, Y, Tanaka, M, Futei, Y, Kamo, T, Basra, M. K. A. and Finlay, Andrew Yule 2017. Japanese version of the family dermatology life quality index: translation and validation. The Journal of Dermatology 44 (8) , pp. 914-919. 10.1111/1346-8138.13831

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Abstract

Skin conditions affect the quality of life (QoL) of patients and their family. To assess family members' QoL, a questionnaire uniquely designed for family members is necessary. We translated the Family Dermatology Life Quality Index (FDLQI), originally created and validated by Basra et al., into Japanese, and evaluated its reliability and validity. For psychometric evaluations, 150 dermatology patients and their family members were included. The Japanese version of the FDLQI showed high test–retest reliability (intraclass correlation coefficient = 0.95) and internal consistency reliability (Cronbach's alpha = 0.86). FDLQI scores significantly correlated with DLQI scores (r = 0.58, P < 0.01, Spearman's rho) and global question (GQ) which measured the patient's skin condition on a visual analog scale (r = 0.36, P < 0.01). Family members of patients with inflammatory skin diseases showed higher FDLQI scores than those with isolated lesions, but the difference was not statistically significant (P = 0.062, Mann–Whitney U-test). Responsiveness to change was demonstrated in a group in which the patient's skin condition was assessed as improved (n = 37, r = 0.46, P < 0.01) but not in that in which it became worse. The difference of the change between the two groups was statistically significant (P < 0.01). Additionally, the change in FDLQI scores and GQ were significantly correlated (r = 0.40, P < 0.01). Exploratory factor analysis suggested essential unidimensionality of the instrument. We showed acceptable validity and responsiveness of this Japanese version of FDLQI. Further clinical epidemiological studies are required to confirm this.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Family, FDLQI, Psychometric evaluations, QoL, Validation, Skin disease
Publisher: Wiley Blackwell
ISSN: 0385-2407
Date of First Compliant Deposit: 19 June 2017
Date of Acceptance: 6 February 2017
Last Modified: 10 May 2018 18:21
URI: http://orca.cf.ac.uk/id/eprint/101517

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