Item selection for the development and validation of a revised classification criteria for adult and juvenile idiopathic inflammatory myopathies: Myositis Revision of Classification (MyoROC) project
Authors' conclusion
The new items that will be tested in the revised criteria were generated with input from a wide range of stakeholders and included, most importantly, MSA, pattern of weakness, skin changes, and additional diagnostic modalities.
Study context
- Population
- International Myositis Assessment and Clinical Studies (IMACS) members; candidate items for revised EULAR-ACR classification criteria for adult and juvenile IIM
- Outcome
- Additional items to be tested in the revised criteria
Methodological detailselectronic survey, multi-step Delphi consensus, three rounds of e-voting, international
- Electronic survey
- Multi-step Delphi consensus
- Three rounds of e-voting
- International
Recommendations
As reported in the abstract
Items agreed to be tested in addition to the original items
New items identified by IMACS survey
24
Items dropped after Steering Committee open discussion
14
New items added after open discussion
5
Items after open discussion
15
Original publication
Item selection for the development and validation of a revised classification criteria for adult and juvenile idiopathic inflammatory myopathies: MyoROC project. Semin Arthritis Rheum. Published 28 August 2025. doi:10.
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