Journal of Rheumatic Diseases

Table. 2.

Epidemiologic studies of the incidence of patients with RA in Korea

Study Incidence
(PY or persons)
Female/Male ratio Study period (yr) Diagnostic criteria Number of study population Age of study population
Won et al. 2018 [7] 28.5/100,000 PY 3.5 2010 Operational definition All beneficiary 19∼99
Sung et al. 2013 [8] 42.0/100,000 persons (95% CI 29.3∼54.7) 3.4 2008 Operational definition All beneficiary ≥16
Choi et al. [12] 16.5/100,000 PY
Seropositive RA
3.4 2002∼2013 Operational definition (seropositive only) 1 million cohort All ages

RA: rheumatoid arthritis, CI: confidence interval, PY: person-year.

J Rheum Dis 2021;28:60~67 https://doi.org/10.4078/jrd.2021.28.2.60
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