Table 1.
Mean (±SEM) demographic and baseline characteristics by ethnicity.
| African American (n=25) | Non-hispanic white (n=23) | |
|---|---|---|
| Age (years) | 27.40 (1.2) | 27.40 (1.3) |
| BMIa (kg/m2) | 28.47 (1.5) | 25.05 (1.1) |
| Beta-endorphin (pg/mL) | 7.09 (1.0) | 7.17 (1.1) |
| Norepinephrine (pg/mL) | 182.30 (13.7) | 169.90 (14.6) |
| Cortisol (mcg/dL) | 6.64 (0.4) | 6.99 (0.4) |
| ACTH | 19.81 (1.5) | 20.17 (1.7) |
| Estradiol (ng/mL) | 47.12 (5.4) | 43.11 (5.7) |
| SBP (mm Hg) | 113.04 (2.0) | 108.18 (2.1) |
| DBP (mm Hg) | 65.64 (1.7) | 62.09 (1.5) |
| MAP (mm Hg) | 81.40 (1.7) | 77.40 (1.6) |
| Beck Depression | 3.60 (0.6) | 2.90 (0.7) |
| Spielberger State Anxiety | 25.6 (1.1) | 28.90 (1.2) |
| Spielberger Trait Anxiety | 31.8 (1.3) | 32.90 (1.3) |
| Caffeine (none/>3C per day) | 50%/29% | 50%/26% |
| Alcohol (0–2/6–10 drinks per week) | 79%/4% | 78%/13% |
| Educationb (lesser than four-year college degree/greater than or equal to four-year college degree) | 42%/58% | 17%/83% |
| Mean annual household Income | $38,750 ($5280) | $31,196 ($4775) |
| Mean per capita income | $20,160 ($2707) | $19,203 ($1990) |
a
BMI, body mass index, t=1.86, p=0.07;
ACTH, adrenocorticotropin hormone; SBP, systolic blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure; Beck Depression, Beck Depression Inventory total score.
b
Education level: Chi-square=7.44, p=0.06.