Table 1.
Baseline characteristics of study participants by race
| Characteristicsa | Race |
Pb | |
|---|---|---|---|
| Caucasians (n = 554) | African Americans (n = 262) | ||
| Age, years | 58.7 (14.6) | 54.2 (14.8) | <0.01 |
| Female,% | 43.7 | 53.4 | <0.01 |
| Hemodialysis % | 76.4 | 89.3 | <0.01 |
| Current smoking, % | 15.1 | 18.1 | <0.01 |
| Body mass index, kg/m2 | 26.6 (6.4) | 27.8 (7.5) | 0.03 |
| Systolic BP, mmHg | 149 (19) | 154 (17) | <0.01 |
| Diabetes, % | 53.7 | 55.7 | 0.59 |
| Prevalent CVD, % | 49.0 | 33.0 | <0.01 |
| Congestive heart failure, % | 47.9 | 45.8 | 0.57 |
| Comorbidity score, 0 to 3 | 1.98 (0.81) | 1.91 (0.78) | 0.23 |
| Severe comorbidity (score = 3), % | 31.1 | 26.3 | 0.17 |
| Total cholesterol, mg/dl | 190 (49) | 186 (50) | 0.32 |
| High-density lipoprotein, mg/dl | 42 (15) | 47 (16) | <0.01 |
| CRP, mg/L | 3.9 (1.8, 9.5) | 3.4 (1.5, 9.6) | 0.10 |
| IL-6, pg/ml | 4.2 (2.7, 7.5) | 3.6 (2.4, 6.0) | <0.01 |
| Serum albumin, g/dl | 3.6 (0.4) | 3.6 (0.3) | 0.62 |
| Hemoglobin, g/dl | 10.8 (1.3) | 10.4 (1.3) | <0.01 |
CVD, cardiovascular disease; CRP, C-reactive protein.
aMedian (interquartile range) for CRP, and IL-6, arithmetic mean (SD) for other continuous variables.
bBy t test or chi-squared test.