Table 3.
Coefficients and Standard Errors From OLS Linear Regression and UQR Models of Systolic BP
| OLS | UQR | |||||
|---|---|---|---|---|---|---|
| Mean | 10th percentile | 25th percentile | 50th percentile | 75th percentile | 90th percentile | |
| Education | ||||||
| Less than high school | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| High school or GED | −2.02 (0.66)** | −1.95 (0.67)** | −1.58 (0.62)* | −0.79 (0.69) | −2.43 (0.98)* | −4.93 (1.55)** |
| Associate’s or some college | −3.87 (0.63)*** | −2.63 (0.73)** | −2.68 (0.69)*** | −2.28 (0.70)** | −4.86 (1.00)*** | −7.32 (1.53)*** |
| Bachelor’s or higher | −5.92 (0.70)*** | −3.80 (0.81) *** | −4.88 (0.84)*** | −4.64 (0.83)*** | −6.84 (0.99)*** | −10.74 (1.28)*** |
| Age | 0.34 (0.07)*** | 0.50 (0.11)*** | 0.42 (0.10)*** | 0.39 (0.09)*** | 0.36 (0.10)*** | 0.17 (0.17) |
| Age-squared | −0.00 (0.00) | −0.01 (0.00)** | −0.01 (0.00) | −0.00 (0.00) | 0.00 (0.00) | 0.01 (0.00) |
| Female | −5.92 (0.33)*** | −6.91 (0.54)*** | −6.94 (0.45)*** | −6.39 (0.39)*** | −6.06 (0.51)*** | −3.57 (0.83)*** |
| Race/ethnicity | ||||||
| Non-Hispanic White | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Non-Hispanic Black | 5.28 (0.63)*** | 3.14 (0.66)*** | 3.61 (0.63)*** | 3.93 (0.74)*** | 6.89 (1.00)*** | 9.52 (1.31)*** |
| Hispanic | 1.14 (0.59) | −0.21 (0.90) | 0.80 (0.65) | 0.71 (0.62) | 1.17 (0.79) | 2.71 (1.46) |
| Other | 1.96 (0.97)* | −0.64 (1.67) | 1.11 (1.08) | 1.97 (1.00) | 3.08 (1.39)* | 4.97 (1.98)* |
| Constant | 129.04 (0.81)*** | 106.83 (0.95)*** | 116.20 (1.04)*** | 126.70 (1.14)*** | 139.85 (1.16)*** | 154.67 (1.98)*** |
| Systolic BP at percentile | 105.33 | 114.67 | 126.33 | 138.67 | 152.33 | |
Notes: N = 14,498. Standard errors in parentheses. Age is centered at 51 years. BP = blood pressure, measured in millimeters of mercury (mmHg); OLS = ordinary least squares; Ref = reference; UQR = unconditional quantile regression.
Two-sided significance tests: ***P < .001. **P < .01. *P < .05.