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The impact of multimorbidity on Quality of Life in inflammatory myopathies: A cluster analysis from the COVAD dataset

  • on behalf of CoVAD Study Group
  • University of Bari “Aldo Moro,” Plastic and Reconstructive Surgery and Burns Unit
  • University of Milan
  • BJ Medical College and Sassoon General Hospitals
  • Taichung Veterans General Hospital
  • NIHR Leeds Biomedical Research Centre
  • University of Leeds, School of Medicine
  • Mymensingh Medical College
  • University of Illinois College of Medicine
  • Mahatma Gandhi Mission Medical College
  • University of São Paulo
  • Universidade Potiguar
  • Seth GS Medical College and KEM Hospital
  • Saint-Joseph University
  • Hotel-Dieu de France Hospital
  • Sofia University St. Kliment Ohridski
  • Green Life Medical College
  • University Hospital "St. Ivan Rilski"
  • Pomeranian Medical University in Szczecin
  • Hospital Sultanah Bahiyah
  • Instituto Mexicano del Seguro Social
  • University of Pavia
  • National Center for Rheumatic Diseases (NCRD)
  • Nippon Medical School Graduate School of Medicine
  • National University of Malaysia
  • Erlangen University Hospital
  • Mayo Clinic
  • Instituto Nacional de Enfermedades Respiratorias
  • King Faisal Specialist Hospital and Research Center
  • University of Ghana
  • Pontifica Universidad Javeriana
  • Queen Savang Vadhana Memorial Hospital
  • Hospital Universidad Del Norte
  • University Hospital Zurich
  • Walter and Eliza Hall Institute of Medical Research
  • University of Melbourne
  • Royal Melbourne Hospital
  • Karolinska Institutet and Karolinska University Hospital
  • Faculty of Medicine and Health
  • King's College London
  • King's College Hospital
  • Manchester University NHS Foundation Trust
  • Salford Royal Hospital
  • Sanjay Gandhi Postgraduate Institute of Medical Sciences
  • Royal Wolverhampton Hospitals Nhs Trust

Research output: Contribution to journalReview articlepeer-review

4 Citations (Scopus)

Abstract

Objective: The presence of comorbidities can substantially affect patients’ quality of life, but data regarding their impact on idiopathic inflammatory myopathies (IIMs) are limited. Methods: We examined the prevalence of comorbidities in IIM patients, other autoimmune rheumatic diseases (oAIRDs) and healthy controls (HCs), using data from the self-reported COVAD-2 survey. We defined basic multimorbidity (BM) as the presence of ≥2 non-rheumatic chronic conditions and complex multimorbidity (CM) as the presence of ≥3 non-rheumatic chronic conditions affecting ≥3 organ systems. Hierarchical clustering on principal components was performed for grouping. Results: Among the COVAD respondents, 1558 IIMs, 4591 oAIRDs and 3652 HCs were analysed. IIMs exhibited a high burden of comorbidities (odds ratio [OR]: 1.62 vs oAIRDs and 2.95 vs HCs, P<0.01), BM (OR: 1.66 vs oAIRDs and 3.52 vs HCs, P<0.01), CM (OR: 1.69 vs AIRDs and 6.23 vs HCs, P<0.01) and mental health disorders (MHDs) (OR: 1.33 vs oAIRDs and 2.63 vs HCs, P<0.01). Among the IIM patients, those with comorbidities or MHDs had lower PROMIS Global Physical (PGP), PROMIS Global Mental (PGM), and PROMIS Physical Function (SF10) scores, and higher fatigue (F4a) scores (all P<0.001). PGP, PGM, SF10a and F4a were influenced by age, active disease, BM and MHDs. Four distinct clusters were identified among the IIMs according to comorbidities and PROMIS scores. Conclusion: Patients with IIMs have a higher burden of comorbidities that influence physical and mental health, identifiable as clinical clusters for optimized and holistic management approaches.

Original languageEnglish
Pages (from-to)2133-2142
Number of pages10
JournalRheumatology
Volume64
Issue number4
DOIs
Publication statusPublished - 1 Apr 2025

Keywords

  • autoinflammatory condition
  • comorbidity
  • myositis
  • observational studies
  • quality of life

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