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Table 1 Demographic features of the familial Mediterranean fever patients and their first-degree relatives

From: High prevalence of spondyloarthritis and ankylosing spondylitis among familial Mediterranean fever patients and their first-degree relatives: further evidence for the connection

Characteristics Familial Mediterranean fever patients (FMF) (n= 201) First degree relatives of FMF patients (n= 319)
Female, number (%) 105 (52%) 189 (59%)
Age, years, mean ± SD 39.6 ± 12.0 44.6 ± 15.5
Education level, mean ± SD 10.6 ± 3.7 8.6 ± 4.4
Disease severity score   
   Mild, % individuals 37.5 -
   Moderate, % individuals 13.5 -
   Severe, % individuals 49.0 -
ESR, mm/h, mean ± SD 20.2 ± 17.7 17.5 ± 14.1
CRP, mg/L, mean ± SD 9.4 ± 19.7 4.2 ± 6.0
BASFI score, mean ± SD 0.9 ± 1.4 1.0 ± 1.6
BASDAI score, mean ± SD 2.4 ± 2.0 2.3 ± 2.1
  1. ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; BASDAI, Bath ankylosing spondylitis disease activity index; BASFI, Bath ankylosing spondylitis functional index.