Developing a quality of life instrument in patients with psoriasis: the Psoriasis Quality of Life Questionnaire (PQLQ)

International Journal of Dermatology
Işil InanirAylin Türel

Abstract

Psoriasis is a chronic skin disease which causes psychological, social and physical problems and affects quality of life. The aim of this study was to develop a quality of life instrument for patients with psoriasis which is suitable for Islamic populations. The psychosocial and daily life problems defined by 75 patients with psoriasis, their relatives and physicians were used to construct a questionnaire, the reliability and validity of which were determined in a group of 156 patients with psoriasis. For reliability, Chronbach's alpha coefficient was 0.87, and item-total correlations were between 0.37 and 0.60 for internal consistency. There was high test-retest reliability (r = 0.98, P < 0.001). For validity, three factors were extracted in the principal components method for construct validity. The maximum factor loadings of each item were between 0.456 and 0.681. For convergent validity, all patients' self-ratings and Psoriasis Area and Severity Index (PASI) were correlated with the questionnaire score (P < 0.001). The questionnaire consisting of 17 items was found to be suitable for both epidemiologic and clinical trials.

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Citations

May 26, 2012·Health and Quality of Life Outcomes·Esteban DaudenNuria Lara
Feb 14, 2015·The British Journal of Dermatology·H KitchenC Bundy
Aug 21, 2013·Actas dermo-sifiliográficas·E DaudénN Perulero
Oct 1, 2020·Central European Journal of Public Health·Jindra ŠmejkalováZdeněk Fiala
Feb 11, 2021·Clinical, Cosmetic and Investigational Dermatology·Beata KowalewskaDzmitry Fiodaravich Khvorik
Sep 30, 2021·Dermatology and Therapy·Beata KowalewskaMarek Sobolewski

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