Table 1.

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

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

ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; BASDAI, Bath ankylosing spondylitis disease activity index; BASFI, Bath ankylosing spondylitis functional index.