Table 1.
Characteristics of 242 young-adult women in the Richmond, CA cohort of the NHLBI Growth and Health Study, 1996–1997.
|
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, 25th 75th %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 |
* P-values pertain to comparison between Blacks and Whites.
† Multiply by 56.8 to convert to SI units, μmol/L
‡ Household income values are the categories in which the median fell.
** Values in parentheses represent median (in the Means column) and 25th/75th percentiles (in the Standard Deviations column)