Table 3.
Summary of regressions of systolic blood pressure without (model 1) and with interactions between race and family income (model 2) and with BMI as a mediator (model 3)
| Estimate | SE | Pr( >|t|) | ||
|---|---|---|---|---|
| Model 1 | ||||
| Family education | ||||
| Less than HS diploma | ||||
| HS diploma/GED | 0.33 | 1.09 | 0.765 | |
| Some college | − 0.48 | 1.00 | 0.631 | |
| Bachelor | − 1.26 | 1.05 | 0.231 | |
| Post graduate degree | − 1.14 | 1.06 | 0.285 | |
| Age | 0.19 | 0.02 | < 1e-6 | *** |
| Sex (male) | 0.90 | 0.33 | 0.006 | ** |
| Race | ||||
| White | ||||
| African American | 2.46 | 0.59 | 0.000 | *** |
| Asian | − 0.84 | 1.13 | 0.460 | |
| Other/mixed | 0.51 | 0.48 | 0.288 | |
| Married | − 0.47 | 0.46 | 0.314 | |
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.71 | 0.59 | 0.233 | |
| ≥ 50 K and < 100 K | 0.01 | 0.53 | 0.989 | |
| Hispanic | 0.30 | 0.52 | 0.564 | |
| Model 2 | ||||
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.75 | 0.70 | 0.285 | |
| ≥ 50 K and < 100 K | − 0.13 | 0.68 | 0.848 | |
| Age | 0.18 | 0.02 | < 1e-6 | *** |
| Sex (male) | 0.89 | 0.33 | 0.007 | ** |
| Family education | ||||
| < HS diploma | ||||
| HS diploma/GED | 0.39 | 1.09 | 0.718 | |
| Some college | − 0.56 | 1.00 | 0.577 | |
| Bachelor | − 1.34 | 1.06 | 0.203 | |
| Post graduate degree | − 1.21 | 1.07 | 0.257 | |
| Race | ||||
| White | ||||
| African American | 1.60 | 0.81 | 0.048 | * |
| Asian | 3.23 | 2.87 | 0.260 | |
| Other/mixed | 1.04 | 0.83 | 0.210 | |
| Married family | − 0.52 | 0.46 | 0.261 | |
| Hispanic | 0.21 | 0.53 | 0.683 | |
| Family income ≥ 100 K × African American | 1.51 | 1.55 | 0.330 | |
| Family income ≥ 50 K and < 100 K × African American | 2.75 | 1.30 | 0.034 | * |
| Family income ≥ 100 K × Asian | − 4.87 | 3.19 | 0.126 | |
| Family income ≥ 50 K and < 100 K × Asian | − 4.56 | 3.60 | 0.205 | |
| Family income ≥ 100 K × Other/mixed | − 0.63 | 1.11 | 0.571 | |
| Family income ≥ 50 K and < 100 K × Other/mixed | − 1.16 | 1.17 | 0.325 | |
| Model 3 | ||||
| Family income | ||||
| < 50 K | ||||
| ≥ 100 K | − 0.44 | 0.76 | 0.563 | |
| ≥ 50 K and < 100 K | 0.19 | 0.74 | 0.796 | |
| Age | 0.18 | 0.02 | < 1e-6 | *** |
| Sex (male) | 1.17 | 0.36 | 0.001 | ** |
| Family education | ||||
| < HS diploma | ||||
| HS diploma/GED | 0.43 | 1.24 | 0.731 | |
| Some college | − 0.82 | 1.14 | 0.470 | |
| Bachelor | − 0.68 | 1.19 | 0.571 | |
| Post graduate degree | − 0.26 | 1.21 | 0.829 | |
| Race | ||||
| White | ||||
| African American | 0.60 | 0.92 | 0.514 | |
| Asian | 0.75 | 3.07 | 0.807 | |
| Other/mixed | 0.50 | 0.91 | 0.581 | |
| Married family | − 0.18 | 0.51 | 0.718 | |
| Hispanic | − 0.46 | 0.59 | 0.436 | |
| Family income ≥ 100 K × African American | 1.89 | 1.67 | 0.257 | |
| Family income ≥ 50 K and < 100 K × African American | 2.14 | 1.48 | 0.149 | |
| Family income ≥ 100 K × Asian | − 2.02 | 3.38 | 0.550 | |
| Family income ≥ 50 K and < 100 K × Asian | − 2.27 | 3.81 | 0.552 | |
| Family income ≥ 100 K × Other/mixed | − 0.70 | 1.23 | 0.569 | |
| Family income ≥ 50 K and < 100 K × Other/mixed | − 0.41 | 1.32 | 0.755 | |
| BMI | 0.69 | 0.04 | < 1e-6 | *** |
.p < .01; *p < .05; **p < .001; ***p < .00001