Table 1: Phenotypic Features of 415 FMF Patients

N = 415 Frequency (%)
Male/Female 251/179
Age at onset (yr±SD) 13.9±9.8
Abdominal pain 386 (93.0%)
Fever 379 (91.3%)
Arthritis 242 (58.3%)
Chest pain 17 (4.0%)
Erysipelas-like erythema 9 (2.1%)
Family history of FMF 238 (57.3%)
Family history of amyloidosis 3 (0.7%)