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Incidence of rare systemic rheumatic and connective tissue diseases in Finland
Author(s) -
KAIPIAINENSEPPÄNEN OILI,
AHO KIMMO
Publication year - 1996
Publication title -
journal of internal medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.625
H-Index - 160
eISSN - 1365-2796
pISSN - 0954-6820
DOI - 10.1046/j.1365-2796.1996.14843000.x
Subject(s) - medicine , incidence (geometry) , polymyositis , epidemiology , connective tissue disease , population , connective tissue , dermatomyositis , mixed connective tissue disease , myositis , dermatology , pediatrics , disease , pathology , autoimmune disease , environmental health , physics , optics
Objective. To obtain information on the incidence of rare systemic rheumatic and connective tissue diseases in Finland. Design. Population‐based epidemiological study. Setting. Five out of 21 central hospital districts in Finland (population: about 1 million adults 16 years of age). Subjects. Subjects entitled under the nationwide sickness insurance scheme to receive specially reimbursed medication for rare systemic rheumatic or connective tissue diseases in 1990. Main outcome measure. Incidence. Results. A total of 30 incident cases occurred. Nine patients had mixed connective tissue disease, four had systemic sclerosis, four had dermato/polymyositis and one patient had inclusion body myositis; the corresponding annual incidence rates were 8, 4, 4 and 1/million of the adult population. Only one patient had adult Still's disease. The overall annual incidence rate of systemic vasculitides was 9/million of the adult population. Conclusion. This study provides population‐based figures on the incidence of rare systemic rheumatic and connective tissue diseases in Finland.