Table 4.
Summary of regressions of diastolic blood pressure without (model 1) and with interactions between race and family income (model 2) and with BMI as the mediator (model 3)
| Estimate | SE | Pr( >|t|) | ||
|---|---|---|---|---|
| Model 1 | ||||
| Family education | ||||
| Less than HS diploma | ||||
| HS diploma/GED | 0.17 | 0.89 | 0.846 | |
| Some college | − 0.47 | 0.82 | 0.568 | |
| Bachelor | − 1.37 | 0.86 | 0.111 | |
| Post graduate degree | − 1.04 | 0.87 | 0.232 | |
| Age | 0.03 | 0.02 | 0.078 | |
| Sex (male) | − 0.64 | 0.27 | 0.018 | * |
| Race | ||||
| White | ||||
| African American | 1.80 | 0.48 | 0.000 | *** |
| Asian | 1.70 | 0.93 | 0.067 | |
| Other/mixed | 0.06 | 0.39 | 0.876 | |
| Married | 0.00 | 0.38 | 0.994 | |
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.66 | 0.48 | 0.172 | |
| ≥ 50 K and < 100 K | 0.23 | 0.44 | 0.600 | |
| Hispanic | 0.32 | 0.43 | 0.453 | |
| Model 2 | ||||
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.57 | 0.57 | 0.324 | |
| ≥ 50 K and < 100 K | 0.60 | 0.56 | 0.280 | |
| Age | 0.03 | 0.02 | 0.078 | |
| Sex (male) | − 0.64 | 0.27 | 0.017 | * |
| Family education | ||||
| < HS diploma | ||||
| HS diploma/GED | 0.25 | 0.89 | 0.781 | |
| Some college | − 0.45 | 0.82 | 0.583 | |
| Bachelor | − 1.38 | 0.86 | 0.109 | |
| Post graduate degree | − 1.03 | 0.87 | 0.238 | |
| Race | ||||
| White | ||||
| African American | 1.71 | 0.66 | 0.010 | * |
| Asian | 5.53 | 2.35 | 0.018 | * |
| Other/mixed | 0.50 | 0.67 | 0.458 | |
| Married family | − 0.05 | 0.38 | 0.893 | |
| Hispanic | 0.38 | 0.43 | 0.372 | |
| Family income ≥ 100 K × African American | 0.03 | 1.26 | 0.979 | |
| Family income ≥ 50 K and < 100 K × African American | 0.69 | 1.06 | 0.516 | |
| Family income ≥ 100 K × Asian | − 3.82 | 2.61 | 0.143 | |
| Family income ≥ 50 K and < 100 K × Asian | − 5.98 | 2.95 | 0.042 | * |
| Family income ≥ 100 K × Other/Mixed | 0.18 | 0.90 | 0.844 | |
| Family income ≥ 50 K and < 100 K × Other/mixed | − 1.78 | 0.96 | 0.063 | |
| Model 3 | ||||
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.08 | 0.62 | 0.898 | |
| ≥ 50 K and < 100 K | 0.87 | 0.61 | 0.153 | |
| Age | 0.01 | 0.02 | 0.656 | |
| Sex (male) | − 0.34 | 0.30 | 0.253 | |
| Family education | ||||
| < HS diploma | ||||
| HS diploma/GED | 0.51 | 1.02 | 0.618 | |
| Some college | − 0.04 | 0.93 | 0.968 | |
| Bachelor | − 0.16 | 0.98 | 0.871 | |
| Post graduate degree | − 0.01 | 0.99 | 0.991 | |
| Race | ||||
| White | ||||
| African American | 0.65 | 0.75 | 0.389 | |
| Asian | 6.32 | 2.51 | 0.012 | * |
| Other/mixed | − 0.39 | 0.74 | 0.601 | |
| Married family | 0.29 | 0.41 | 0.486 | |
| Hispanic | − 0.34 | 0.49 | 0.487 | |
| Family income ≥ 100 K × African American | 0.41 | 1.36 | 0.764 | |
| Family income ≥ 50 K and < 100 K × African American | − 0.49 | 1.21 | 0.682 | |
| Family income ≥ 100 K × Asian | − 4.66 | 2.77 | 0.093 | |
| Family income ≥ 50 K and < 100 K × Asian | − 6.45 | 3.13 | 0.039 | * |
| Family income ≥ 100 K × Other/mixed | 1.19 | 1.00 | 0.235 | |
| Family income ≥ 50 K and < 100 K × Other/mixed | − 1.21 | 1.08 | 0.260 | |
| BMI | 0.49 | 0.04 | < 1e-6 | *** |
p < 0.01; *p < 0.05; **p < 0.001; ***p < 0.00001