PLoS ONE (Jan 2021)

Psychometric characteristics of DLQI-BRA and Skindex-16 to measure the impact of dermatological diseases on quality of life in Brazilian patients.

  • Silmara Meneguin,
  • Ticiane Dionozio de Souza Matos,
  • Camila Fernandes Pollo,
  • Miriane Garuzi,
  • Hélio Amante Miot,
  • César de Oliveira

DOI
https://doi.org/10.1371/journal.pone.0254882
Journal volume & issue
Vol. 16, no. 8
p. e0254882

Abstract

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ObjectiveTo compare the psychometric performance of the Dermatology Life Quality Index (DLQI-BRA) and Skindex-16 to assess quality of life (QoL) in Brazilian patients with dermatological diseases.MethodsThis was a cross-sectional study carried out in a dermatology outpatient clinic of the São Paulo State University, with 188 patients with dermatological diseases. QoL was evaluated using the Dermatology Life Quality Index (DLQI-BRA) and Skindex-16. Cronbach's alpha and Intraclass Correlation for Perfect Concordance (ICC) were used to analyse the reliability and temporal stability, respectively.ResultsA positive correlation was found between the total Skindex-16 score and DLQI-BRA (0.75). Both instruments showed a significant (p0,7), but Skindex-16 displayed the highest Cronbach alpha (0.94; CI = 0.93-0.95).ConclusionBoth instruments tested showed a good psychometric performance assessing QoL in patients with skin dermatoses. The instruments displayed reliability and temporal stability as well as responsiveness.