Refining Incidence and Characteristics of Inflammatory Myopathies: A Quadruple‐Source Capture–Recapture Survey Using the 2017 European League Against Rheumatism/American College of Rheumatology Classification Criteria
Authors' conclusion
The stringent methodology used in our study provides an accurate estimation of the incidence of IM. This study also demonstrates, in a population-based cohort, the systemic nature of IM.
Study context
- Population
- Patients residing in Alsace, France (population 2 million) fulfilling the 2017 European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) criteria for inflammatory myopathies (IM) between January 1, 2006, and January 1, 20131,742 potential cases reviewed
- Participants
- 106 patients
- Outcome
- Incidence of IM
Methodological detailsquadruple-source capture–recapture, log-linear models, 2017 EULAR/ACR classification criteria
- Quadruple-source capture–recapture
- Log-linear models
- 2017 EULAR/ACR classification criteria
Main finding
As reported in the abstract
Incidence rate of IM (new cases per million inhabitants per year)
Incidence rate of IM, new cases per million inhabitants per year
8.22
95% CI 6.76–9.69
Estimated additional missed cases (log-linear models)
14.9
Observational data: associations, not effects.
Further findings
Spatial and temporal distribution of incidence
- No spatial or temporal heterogeneity was observed
Systemic manifestations
- Extramuscular manifestations other than dermatomyositis rash were frequently recorded
Original publication
Refining Incidence and Characteristics of Inflammatory Myopathies: A Quadruple‐Source Capture–Recapture Survey Using the 2017 European League Against Rheumatism/American College of Rheumatology Classification Criteria. Arthritis Rheumatol. Published 4 August 2023. doi:10.
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