TABLE 1—
Descriptive Statistics and Results From Least Squares Models of Proportion of Population Reporting Fair or Poor Health Status: United States, 1995–1999, and 217 US Counties, 1996–1999
Explanatory Variable | Mean (SD) | Unstandardized Regression Coefficient (Absolute Value of t) |
State-level ecological analysis (n = 250) | ||
Proportion Black: state population | 0.101 (0.094) | 0.202* (12.40) |
State annual household income, thousands of $ | 43.26 (6.34) | −0.003* (10.14) |
R2 | 0.545 | |
Mean, y | 0.138 | |
County-level ecological analysis (n = 868) | ||
Proportion Black: county population | 0.116 (0.118) | 0.093* (5.19) |
County annual household income, thousands of $ | 47.99 (14.05) | −0.002* (10.90) |
R2 | 0.202 | |
Mean, y | 0.132 |
Note. Models also included indicator variables for year of survey.
*P < .01.