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. 2012 Jun 28;7(6):e38930. doi: 10.1371/journal.pone.0038930

Table 1. Clinical Characteristics of Study Subjects.

Characteristic RA (n = 164) Control (n = 90) P-Value
Demographics (mean±SD)
Age (years) 54.0±11.8 52.9±11.3 0.422
Female Sex, no. (%) 112 (68%) 56 (62%) 0.328
Caucasian, no. (%) 147 (90%) 76 (84%) 0.227
Non-smoker, no. (%) 39 (24%) 8 (9%) 0.003
Disease Activity Score (DAS28) 3.9 (2.6–4.9) - -
Disease Duration (years) 3 (2–18) - -
Cardiovascular Risk Factor
Hypertension, no. (%) 85 (52%) 35 (39%) 0.048
Systolic BP, mmHg (mean±SD) 132.8±20.2 129.1±17.5 0.133
Diastolic BP, mmHg (mean±SD) 74.81±10.89 72.74±8.82 0.185
CVD or coronary procedure, no. (%) 22 (13%) 8 (9%) 0.285
Diabetic, no. (%) 18 (11%) 4 (4%) 0.077
On NSAIDS, no. (%) 54 (33%) 36 (40%) 0.26
BMI, kg/m2 (mean±SD) 29.14±6.63 28.54±5.88 0.543
CACS (Agatston Units) (median, IQR) 2.7 (0.0–150.4) 0.0 (0.0–19.2) 0.021
RA treatment regimens
Current corticosteroid use, no. (%) 88 (54%) - -
Current methotrexate use, no. (%) 118 (72%) - -
Current antimalarial use, no. (%) 42(26%) - -
Current anti-TNF agent use, no. (%) 34 (21%) - -
Laboratory Measurements (median, IQR)
HDL (mg/dL) 43.0 (37.0–54.0) 45.0 (38.0–54.0) 0.705
LDL (mg/dL) 111.0 (88.5–135.5) 121.0 (104.0–140.0) 0.031
Homocysteine (µmol/L) 2.317 (2.083–2.477) 2.104 (1.978–2.270) <0.001
Creatinine (mg/dL) 0.800 (0.700–0.900) 0.800 (0.700–0.900) 0.408
TNFa (pg/mL) 5.41 (2.72–11.00) 3.38 (2.35–4.67) <0.001
IL-6 (pg/mL) 13.81 (4.41–42.36) 4.25 (1.15–18.27) <0.001
CRP (mg/L) 4.00 (1.19–11.00) 0.55 (0.21–1.53) <0.001
NT-BNP (pg/mL) 89.7 (28.7–232.3) 18.0 (3.2–39.0) <0.001
hs-cTn-I (pg/mL) 1.150 (0.730–1.922) 0.770 (0.492–1.277) <0.001

P values were determined by Wilcoxon’s rank sum test or chi-square test.