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. 2004 Sep;25(9):791-3.

[Assessment on the reliability and validity of the Dermatology Life Quality Index in Chinese version]

[Article in Chinese]
Xiao-ling Wang  1 , Tian-en Zhao, Xi-qin Zhang
Affiliations
  • PMID: 15555362

[Assessment on the reliability and validity of the Dermatology Life Quality Index in Chinese version]

[Article in Chinese]
Xiao-ling Wang et al. Zhonghua Liu Xing Bing Xue Za Zhi. 2004 Sep.

Abstract

Objective: Since the dermatology life quality index (DLQI), a self-administered general dermatology quality of life instrument, was originally developed and published in a dermatology clinic at University hospital of Wales, our goal was to popularize the disease-specific scale used in measuring the quality of life of patients with skin diseases and to assess the reliability and validity of its Chinese version.

Methods: We administered the DLQI to 236 out-patients attending our dermatology clinic and results that had been found by those who originated the DLQI, were examined. The reliability and validity of DLQI were assessed by means of reliability analysis and factor analysis.

Results: Overall, the DLQI seemed easy to administer and could be completed within 3 minutes. The internal consistency coefficient rates of this unidimensional measure were 0.87 (Cronbach's alpha) and 0.85 (Spearman-brown, s) with high inter-correlations found between the dimensions with a correlation coefficient ranging from 0.4024 - 0.6569. Factor analysis resulted in a unidimensional pattern, which supported the use of a total DLQI-C score.

Conclusion: DLQI was an easy and efficient instrument for assessing the quality of life in patients with dermatological problems and with better reliability and validity. Thus, it could be used in both research and clinical settings in China.

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