Table 1 Study Characteristics by Quartiles of RBP4
|  | RBP4 Quartile, μg/mL |  | |||
|---|---|---|---|---|---|
|  | ≤36.9 | 37.0-49.0 | 49.1-61.4 | ≥61.5 | P-value** |
Age, years | 52.7 (0.2) | 53.1 (0.2) | 52.7 (0.2) | 53.1 (0.2) | 0.33 |
% Current Smokers | 8.0% | 6.7% | 6.8% | 4.5% | 0.21 |
% Non-White Race | 29.6% | 21.9% | 21.5% | 21.4% | 0.08 |
BMI, kg/m2 | 26.1 (0.3) | 26.2 (0.3) | 26.3 (0.3) | 26.4 (0.3) | 0.49 |
Waist Circumference, cm* | 82.0 (16.5) | 82.7 (15.2) | 83.8 (18.0) | 85.8 (17.0) | 0.42 |
Systolic Blood Pressure, mmHg | 118.1 (1.1) | 119.4 (1.1) | 117.2 (1.1) | 120.3 (1.2) | 0.38 |
Diastolic Blood Pressure, mmHg | 74.7 (0.7) | 75.3 (0.7) | 73.8 (0.6) | 75.6 (0.7) | 0.66 |
HDL-C, mmol/L | 1.71 (0.03) | 1.68 (0.03) | 1.66 (0.04) | 1.71 (0.04) | 0.94 |
Triglycerides, mmol/L* | 0.82 (0.53) | 0.86 (0.53) | 0.94 (0.53) | 0.92 (0.57) | 0.09 |
Glucose, mmol/L | 4.95 (0.04) | 4.93 (0.04) | 4.96 (0.04) | 4.94 (0.04) | 0.94 |
Insulin, pmol/L* | 27.8 (31.9) | 27.8 (36.1) | 28.5 (34.7) | 34.0 (43.8) | 0.23 |
C-reactive Protein, mg/dL* | 0.8 (1.9) | 1.2 (2.2) | 1.1 (2.1) | 0.9 (2.2) | 0.14 |
Carotid IMT, mm* | 0.71 (0.11) | 0.70 (0.11) | 0.72 (0.10) | 0.72 (0.11) | 0.52 |