| All (n = 242) | Blacks (n = 155) | Whites (n = 87) |  | |||
---|---|---|---|---|---|---|---|
 | Mean | SD | Mean | SD | Mean | SD | p* |
Systolic BP (mmHg) | 109.8 | 10.3 | 111.1 | 10.8 | 107.4 | 9.0 | 0.007 |
Diastolic BP (mmHg) | 66.9 | 9.0 | 67.4 | 9.0 | 66.1 | 9.0 | 0.31 |
Plasma vitamin C (mg/dL)†| 1.2 | 0.5 | 1.2 | 0.4 | 1.2 | 0.6 | 0.34 |
Age (yr) | 19.1 | 0.6 | 19.2 | 0.7 | 19.1 | 0.6 | 0.28 |
Weight (kg) | 70.9 | 19.3 | 71.2 | 19.3 | 70.4 | 19.3 | 0.74 |
BMI (kg/m2) | 26.1 | 6.7 | 26.4 | 6.6 | 25.7 | 6.9 | 0.40 |
Television or video watching (hr/wk) | 32.0 | 24.1 | 39.3 | 23.9 | 19.0 | 18.4 | < 0.0001 |
Household income ($)‡ | 20,000–29,999 |  | 10,000–19,999 |  | 30,000–39,999 |  | < 0.0001 |
Total energy intake (kcal/d) | 1919.6 | 787.2 | 1985.8 | 827.7 | 1809.9 | 706.4 | 0.11 |
Total fat intake (gm/d) | 74.1 | 36.8 | 79.3 | 36.2 | 65.5 | 36.2 | 0.006 |
Dietary vitamin C intake (mg/d)** Mean (median, 25th75th%ile) | 121.7 (79.3) | 176.6 (38.9, 128.2) | 128.1 (80.0) | 203.4 (43.4, 126.1) | 111.1 (63.5) | 120.3 (31.0, 136.5) | 0.43 |