ArticleHealth and quality of life outcomes2020
Dimensionality and psychometric analysis of DLQI in a Brazilian population.
Article in Health and quality of life outcomes, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- A Systematic Review of 207 Studies Describing Validation Aspects of the Dermatology Life Quality Index.Acta dermato-venereologica · 2024Pooled it
- Confirmation of unidimensionality of the Dermatology Life Quality Index (DLQI) using a multinational 3,408 patient dataset.Journal of patient-reported outcomes · 2026Article
- Responsiveness of the Dermatology Life Quality Index and the Colombian Validated Version of the Skindex-29 in Scarring and Non-Scarring Alopecia.Skin appendage disorders · 2025Article
- Understanding the impact of acne vulgaris and associated psychological distress on self-esteem and quality of life via regression modeling with CADI, DLQI, and WHOQoL.Scientific reports · 2023Article
- Quality of life in Hidradenitis Suppurativa (Acne Inversa): A scoping review.Skin health and disease · 2023Article
- A Rasch model analysis of two interpretations of 'not relevant' responses on the Dermatology Life Quality Index (DLQI).Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2021Article
- Palmoplantar Psoriasis Quality of Life Index into Brazilian Portuguese (PPQLI-BRA) ‒ Translation, cultural adaptation, and validation.Anais brasileiros de dermatologiaArticle
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Dermatology Life Quality Index (DLQI) is the most commonly used instrument for clinical evaluation of the impact on health-related quality of life (HRQOL) in dermatological research protocols. The DLQI's classical psychometric properties have been considered adequate in validation studies from several countries. However, the structure of the DLQI is a matter of discussion, especially concerning the dimensionality and informative properties of its questions according to the item response theory (IRT).
methodsPooled data from studies in Brazil that utilized the DLQI to assess HRQOL in 14 dermatoses were reanalyzed. Classical psychometrical analysis, dimensionality assessment through parallel analysis and IRT (Samejima's ordinal model) analysis were performed.
resultsThe sample consisted of 1286 patients with a mean age of 47 years (SD = 16), and the proportion of women was 59% (765). The DLQI scores ranged from 0 to 29, with a median (p
conclusionsThe DLQI exhibits adequate psychometric reliability and a unidimensional structure for assessing HRQOL in Brazilian dermatological patients. The DLQI's performance varies in the assessment of HRQOL in heterogeneous samples.
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