Table 1: Demographic and Clinical Characteristics of Patients and Controls

Patients (n=64) Controls (n=31)
age (mean ±SD) 48.7±12.5 46.2±13.4
Sex (female/male) 53/11 26/5
BMI( kg/m2) 27.0±5.0 27.5±4.7
Duration of the disease (years) 6.5 (0.50-34)
Duration of MTX treatment (years) 2 (0.2-10)
Concurrent DMARD treatment (n) (%) 34 (53.1%)
Rheumatoid factor positivity (n)(%) 41( 64.1%)

BMI: Body mass index, MTX: Methotrexate, DMARD: Disease-modifying antirheumatic drugs.