Table 1

Baseline characteristics according to RA status
Characteristic RA Controls P
Number = 1 55 Number = 835
Demographics
  Age, years 59.2 ± 8.3 62.8 ± 10.0 <0.001
  Female; n (%) 97 (63%) 437 (52%) 0.019
  Caucasian race; n (%) 136 (88%) 425 (51%) <0.001
  Education; n (%) 122 (79%) 580 (70%) 0.035
    Some college or higher
Cardiovascular Risk Factors
  Diabetes; number (%) 11 (7%) 137 (16%) 0.003
  Hypertension (%) 87 (56%) 465 (56%) 0.92
    Systolic BP, mm Hg 126 ± 17 126 ± 20 0.72
    Diastolic BP, mm Hg 75 ± 9 71 ± 10 <0.001
  Dyslipidemia
   Total cholesterol, mg/dL 198 ± 40 192 ± 35 0.10
   LDL cholesterol, mg/dL 117 ± 32 118 ± 31 0.74
   HDL cholesterol, mg/dL 56 ± 20 51 ± 14 <0.001
   Triglycerides, mg/dL 126 ± 98 117 ± 72 0.20
  Cigarette smoking
   Current; number(%) 15 (10%) 103 (12%) 0.32
Serum inflammatory markers
  CRP, mg/L; median (IQR) 2.3 (1.1, 6.7) 2.2 (1.0, 4.6) 0.18
  IL-6, pg/mL; median (IQR) 3.6 (1.6, 7.5) 1.3 (0.8, 1.91) <0.001
  Fibrinogen, mg/dL; median (IQR) 335 (278, 416) 339 (294, 387) 0.79
Prevalence of CAC 82 (52.9%) 454 (54.3%) 0.79
Unadjusted CAC score (Agatston Units) 3.1 (0, 135.1) 6.4 (0, 119.6) 0.68

BP, blood pressure; CAC, coronary artery calcium; CRP, C-reactive protein; HDL, high density lipoprotein; IQR, interquartile range; LDL, low density lipoprotein; RA, rheumatoid arthritis.

Chung et al.

Chung et al. Arthritis Research & Therapy 2013 15:R134   doi:10.1186/ar4314

Open Data