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.