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Title: Japanese version of the Dermatology Life Quality Index: validity and reliability in patients with acne.
Authors: Takahashi, Natsuko
Suzukamo, Yoshimi
Nakamura, Motonobu
Miyachi, Yoshiki
Green, Joseph
Ohya, Yukihiro
Finlay, Andrew Y
Fukuhara, Shunichi  kyouindb  KAKEN_id
the Acne QOL Questionnaire Development Team
Author's alias: 福原, 俊一
Issue Date: 3-Aug-2006
Publisher: BioMed Central Ltd.
Journal title: Health and quality of life outcomes
Volume: 4
Thesis number: 46
Abstract: [Background]Patient-reported quality of life is strongly affected by some dermatologic conditions. We developed a Japanese version of the Dermatology Life Quality Index (DLQI-J) and used psychometric methods to examine its validity and reliability. [Methods]The Japanese version of the DLQI was created from the original (English) version, using a standard method. The DLQI-J was then completed by 197 people, to examine its validity and reliability. Some participants completed the DLQI-J a second time, 3 days later, to examine the reproducibility of their responses. In addition to the DLQI-J, the participants completed parts of the SF-36 and gave data on their demographic and clinical characteristics. Their physicians provided information on the location and clinical severity of the skin disease. [Results]The participants reported no difficulties in answering the DLQI-J items. Their mean age was 24.8 years, 77.2% were female, and 78.7% had acne vulgaris. The mean score of DLQI was 3.99(SD: 3.99). The responses were found to be reproducible and stable. Results of principal-component and factor analysis suggested that this scale measured one construct. The correlations of DLQI-J scores with sex or age were very poor, but those with SF-36 scores and with clinical severity were high. [Conclusion]The DLQI-J provides valid and reliable data despite having only a small number of items.
Rights: © 2006 Takahashi et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI(Published Version): 10.1186/1477-7525-4-46
PubMed ID: 16884543
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