Seropositive rheumatoid arthritis, strict definition


Felty's syndrome: Felty syndrome (FS), also known as ''super rheumatoid'' disease, is a severe form of rheumatoid arthritis (RA), characterized by a triad of RA, splenomegaly and neutropenia, resulting in susceptibility to bacterial infections.

Data source
KELA reimboursements codes ANY
KELA reimbursements ICD-10: M058/M059
Conditions required RHEUMA_SEROPOS_OTH_ICD10
First defined in version DF3
DOID 11042
GWAS catalog 0007269
MESH D001172
SNOMED CT 57160007

Key figures

Sex All Female Male
Number of individuals 788 549 239
Unadjusted prevalence (%) 0.45 0.55 0.32
Mean age at first event (years) 57.95 56.78 60.64
Case fatality at 5-years (%) 1.02 0.73 1.67

Longitudinal metrics

Sex All Female Male
Median nb. of events per indiv. 1 1 1
Recurrence at 6 months (%) 2.34 2.72 1.43


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