Questionnaire Modifications and Alternative Scoring Methods of the Dermatology Life Quality Index: A Systematic Review

April 2021 in “ Value in Health ”

Fanni Rencz, Ákos Szabó, Valentin Brodszky

Dermatology Life Quality Index DLQI psychometric quality internal consistency reliability content validity construct validity criterion validity responsiveness health-related quality of life instruments dermatology quality of life instruments skin health

Studysummary This review categorizes 59 modifications of the Dermatology Life Quality Index across multiple studies, highlighting the need for further validation of these customized health-related quality of life tools in dermatology.

Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer

This systematic review evaluated 59 modifications and alternative scoring methods of the Dermatology Life Quality Index (DLQI) across 77 studies involving 25,509 patients from 28 countries. The review found that many modifications lacked comprehensive validation, highlighting the need for further validation to ensure reliability and avoid biases in medical product labeling and reimbursement claims. The DLQI-R scoring and LY-DLQI questionnaire were identified as promising modifications for future validation. The review emphasized the importance of culturally adapted DLQI versions to better assess the quality of life impacts of dermatological conditions, including alopecia, on diverse patient populations.

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