Table 1.
Baseline characteristicsa
| Entire sample (n = 278) | African Americans (n = 59) | Caucasians (n = 219) | p value | |
|---|---|---|---|---|
| Age, years | 57.4 ± 5.4 | 55.1 ± 3.9 | 58.0 ± 5.6 | <.001 |
| Male gender, n (%) | 101 (36.3) | 11 (18.6) | 90 (41.1) | <.01 |
| Education years | 17.6 ± 2.4 | 16.4 ± 2.5 | 17.9 ± 2.3 | <.001 |
| BMI, kg/m2 | 28.0 ± 6.3 | 28.1 ± 6.4 | 28.0 ± 6.2 | 0.88 |
| Obese,34 n (%) | 79 (28.4) | 17 (28.8) | 62 (28.3) | 0.59 |
| Systolic BP, mm Hg | 124.8 ± 15.9 | 127.0 ± 16.9 | 124.2 ± 15.7 | 0.23 |
| Diastolic BP, mm Hg | 77.8 ± 10.5 | 79.1 ± 10.8 | 77.4 ± 10.5 | 0.28 |
| Elevated BP,31 n (%) | 57 (20.5) | 15 (25.4) | 42 (19.2) | 0.55 |
| Total cholesterol, mg/dL | 200.3 ± 39.3 | 196.5 ± 39.6 | 201.3 ± 39.2 | 0.41 |
| Elevated cholesterol,33 n (%) | 36 (12.9) | 7 (11.9) | 29 (13.2) | 0.40 |
| Glucose, mg/dL | 92.1 ± 16.7 | 87.4 ± 9.6 | 93.4 ± 17.9 | <.001 |
| Elevated glucose,32 n (%) | 42 (15.1) | 6 (10.2) | 36 (16.4) | 0.23 |
| CRP, mg/ | 0.3 ± 0.4 | 0.3 ± 0.3 | 0.3 ± 0.5 | 0.40 |
| IL-6, pg/mL | 1.3 ± 2.0 | 1.8 ± 2.3 | 1.2 ± 2.0 | 0.06 |
| IL-8, pg/mL | 10.6 ± 8.0 | 9.3 ± 4.7 | 10.9 ± 8.6 | 0.07 |
| TNF-α, pg/mL | 4.3 ± 7.6 | 3.6 ± 2.1 | 4.5 ± 8.4 | 0.13 |
a
BMI = body mass index; BP = blood pressure; CRP = C-reactive protein; IL-6 = interleukin 6; IL-8 = interleukin 8; TNF = tumor necrosis factor