RA, rheumatoid arthritis; BMI, body mass index; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; RF, rheumatoid factor; APCA, anti-citrullinated protein antibodies; VAS, visual analog scale; SJC, swollen joint count; TJC, tender joint count; DAS28, 28-joint count Disease Activity Score; CDAI, Clinical Disease Activity Index; SDAI, Simplified Disease Activity Index; HAQ, Health Assessment Questionnaire; DMARD, disease-modifying antirheumatic drug; HR, heart rate; PAC, premature atrial contraction; PVC, premature ventricular contraction; AF, atrial fibrillation.