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Table 1 Patient demographics

From: Rheumatoid arthritis is an independent risk factor for multi-vessel coronary artery disease: a case control study

Variable RA + CAD (n = 75) CAD (n = 128) P a
Age, median (Q1, Q3) 66.4 (60.7, 71.7) 66.7 (59.8, 71.4) 0.66
Sex, n (%)    0.63
   Male 39 (52) 71 (55) -
   Female 36 (48) 57 (45) -
History of diabetes, n (%) 14 (19) 24 (19) 0.99
History of hypertension, n (%) 28 (37) 51 (40) 0.72
History of hyperlipidemia, n (%) 11 (15) 31 (24) 0.10
History of smoking, n (%) 11 (15) 23 (18) 0.54
Age at RA onset, year 55.3 ± 12.7 -  
RA disease duration, year 17.6 ± 11.0 -  
Rheumatoid factor positive, n (%) 68 (90.7) -  
Nodular disease, n (%) 40 (53.3) -  
Extra-articular disease, n (%) 16 (21.3) -  
Steroid use, n (%) 55 (73.3) -  
DMARD use, n (%) 68 (90.7) -  
  1. aP values are from chi-square tests, except for age, where it is from a Wilcoxon rank-sum test. CAD, coronary artery disease; DMARD, disease-modifying antirheumatic drug; RA, rheumatoid arthritis.