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Multicenter Study
. 2024 Nov 27;10(4):e004653.
doi: 10.1136/rmdopen-2024-004653.

Performance of the EULAR Systemic sclerosis Impact of Disease (ScleroID) questionnaire as a patient-reported outcome measure for patients with diffuse systemic sclerosis

Affiliations
Multicenter Study

Performance of the EULAR Systemic sclerosis Impact of Disease (ScleroID) questionnaire as a patient-reported outcome measure for patients with diffuse systemic sclerosis

Rucsandra Dobrota et al. RMD Open. .

Abstract

Objective: Systemic sclerosis Impact of Disease (ScleroID) is the first comprehensive patient-reported outcome measure (PROM) specifically developed for systemic sclerosis (SSc). We investigated the performance of ScleroID in patients with diffuse cutaneous SSc (dcSSc), as a prerequisite for its use in randomised controlled trials (RCTs) testing potentially disease-modifying drugs.

Methods: All patients with dcSSc from the large, multicentric, ScleroID cohort were included. SSc-Health Assessment Questionnaire (HAQ), EuroQol-5 Dimensions and 36-item Short Form Health Survey (SF-36) were used as comparators. The study includes a longitudinal arm with a reliability visit at 7±3 days and a 12 months follow-up visit. The performance of ScleroID in dcSSc was assessed according to the Outcome Measures in Rheumatology filter.

Results: In total, 152 dcSSc patients were analysed (29% male, median age 54 years). ScleroID reflected well the disease impact of dcSSc, showing a good construct validity with high Spearman's correlation coefficients with comparators (SSc-HAQ, 0.79, 95% CI (0.69, 0.86); HAQ-Disability Index, 0.72 95% CI (0.60, 0.80); SF-36 physical score, -0.69 95% CI (-0.77, -0.60)). The internal consistency was strong (Cronbach's alpha 0.87, split-half reliability coefficient 0.88).In the longitudinal arm, 44 patients had a reliability visit and 113 had a follow-up visit, of whom 19/113 (17%) reported a significant change (11 improved, 8 worsened). ScleroID showed a good consistency and discriminative ability with excellent test-retest reliability (intraclass correlation coefficient 0.89, 95% CI (0.84, 0.92)) and moderate sensitivity to change (standardised response mean -0.63 in the improved subgroup and 0.48 in the worsened subgroup), but superior to the comparators.

Conclusion: The European Alliance of Associations for Rheumatology (EULAR) ScleroID performs well for patients with dcSSc. This supports its inclusion and regular assessment as PROM in RCTs.

Keywords: Connective Tissue Diseases; Health-Related Quality Of Life; Patient Reported Outcome Measures; Scleroderma, Systemic.

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Conflict of interest statement

Competing interests: RD: speakers bureau for Actelion, advisory board for Boehringer-Ingelheim, grants/research support from Pfizer, Actelion, Iten-Kohaut foundation, Walter und Gertrud Siegenthaler Fellowship, congress participation support from Amgen, Otsuka. AG, KF, ATK, AR, YA, PEC and LC: none reported. CD: consultancy fees from: Janssen, GlaxoSmithKline, Bayer, Sanofi, Boehringer Ingelheim, Roche, CSL Behring, Corbus, Acceleron, Horizon, Arxx, Lilly, Novartis, Certa and research grants to institution from: Abbvie, Servier, Horizon, GlaxoSmithKline. RH, GS, OK-B: none reported.CB: consulting for Boehringer Ingelheim. Research grants from Foundation for Research in Rheumatology (FOREUM), Gruppo Italiano Lotta alla Sclerodermia (GILS), European Scleroderma Trials and Research Group (EUSTAR), Scleroderma Clinical Trials Consortium (SCTC), Scleroderma Research Foundation (SRF), Novartis Foundation for biological-medical research, EMDO Foundation. Educational grants from AbbVie and Wellcome Trust. Congress participation support from Boehringer Ingelheim and Müller-Hartmann foundation. MM-C: none reported. CM received speaker and/or consultancy fees from Janssen-Cilag AG, Boehringer Ingelheim, Deutsche Rheumaakademie, MED Talks Switzerland, Mepha, Novartis and PlayToKnow AG, and travel support for congress from Boehringer Ingelheim. AMG: consulting and congress participation support from Boehringer Ingelheim. Research grant from Foundation for Research in Rheumatology (FOREUM). UM-L, TK and TH: none reported. OD: has/had consultancy relationship with and/or has received research funding from and/or has served as a speaker for the following companies in the area of potential treatments for systemic sclerosis and its complications in the last three calendar years: 4P-Pharma, Abbvie, Acceleron, Alcimed, Altavant, Amgen, AnaMar, Argenx, Arxx, AstraZeneca, Blade, Bayer, Boehringer Ingelheim, Cantargia AB, Corbus, CSL Behring, Galderma, Galapagos, Glenmark, Gossamer, Horizon, Janssen, Kymera, Lupin, Medscape, Merck, Miltenyi Biotec, Mitsubishi Tanabe, Nkarta Inc., Novartis, Orion, Prometheus, Redxpharma, Roivant, EMD Serono, Topadur and UCB. Patent issued 'mir-29 for the treatment of systemic sclerosis' (US8247389, EP2331143). Cofounder of CITUS AG. OD is a member of the editorial board of RMD open. MB has consultancy relationship with and/or received research funding from and/or served as speaker for the following companies in the area of potential treatments for systemic sclerosis and its complications in the last three calendar years: GSK, Amgen, Novartis and outside of this research area: Vifor.

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