Global assessment of psoriasis severity and change from photographs: a valid and consistent method

The Journal of Investigative Dermatology
David FarhiAlain Dupuy

Abstract

Five raters tested the validity and consistency of global assessments of severity and change from standardized photographs in 30 consecutive patients with plaque psoriasis. The main outcome measures were physician global assessment (PGA) scores for change between baseline and follow-up visits ("dynamic PGA") and for severity at the baseline visit ("static PGA"). These photographic evaluation scores were compared with in-person clinical ratings. Panel ratings were obtained using the mean of the five raters' independent evaluations from photographs. Validity and consistency were assessed with intra-class coefficients (ICCs; 95% confidence interval). Intra-rater and intra-panel consistencies for photographic dynamic PGA scores were 0.85 (0.74-0.92) and 0.95 (0.92-0.99), respectively. As an evaluation of validity, agreement between photographic and clinical static PGA scores was 0.87 (0.75-0.93). We concluded that global assessment of psoriasis severity and change from photographs by a panel of experts was accurate and consistent. The generalizability of the results requires further studies. The intrinsic limitations of photographic assessment of individual characteristics such as plaque thickness and their effect on global photogr...Continue Reading

References

Dec 15, 1994·Statistics in Medicine·R Müller, P Büttner
Sep 1, 1999·The British Journal of Dermatology·D M AshcroftC E Griffiths
Jun 29, 2000·Archives of Dermatology·M M Chren
Feb 15, 2005·Annals of the Rheumatic Diseases·S R Feldman, G G Krueger
May 13, 2005·The British Journal of Dermatology·A Y Finlay

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Citations

Apr 5, 2014·Journal of the American Academy of Dermatology·Karlijn M G KlaassenMarcel C Pasch
Dec 9, 2015·Journal of the European Academy of Dermatology and Venereology : JEADV·N AuffretB Dréno
Oct 17, 2009·Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)·Stefan Kazimierz PiechnikAnne-Lene Krogstad
Aug 5, 2011·Journal of the European Academy of Dermatology and Venereology : JEADV·H-Y ChiuT-F Tsai
Aug 3, 2013·The Journal of Rheumatology·Alice B Gottlieb, April W Armstrong
Apr 1, 2021·The Journal of Dermatology·Shiho YasueHidenori Ohnishi

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