Table 2.
Spatial Modeling of COPD Measures for California, 1993 and 1999*
| Measures | Zip Code model for COPD related charges, 1999 | Grid Model for COPD related charges, 1993 | Grid Model for COPD related charges, 1999 |
|---|---|---|---|
| Maximum Likelihood Coefficients | |||
| Percentage Age 45 plus | 457.10 | 360.95 | 499.53 |
| Percentage Hispanic | 24.25 | 26.46 | 46.35 |
| Percentage with bachelor's degree | -19338.49 | -11998.19 | -20962.83 |
| Median family income | -11.57 | -8.95 | -5.27 |
| Tobacco outlets per area | 4838.17 | 514.18 | 964.30 |
| Model Parameters | |||
| constant | 1214112.98 | 464428.87 | 418230.26 |
| ML Estimate of Spatial Autocorrelation (Rho) | 0.54 | 0.733209 | 0.752336 |
| Pseudo R-Squared [(1-Sigma2(UF)/Sigma2(y))] | 0.79 | 0.96 | 0.94 |
* All the numbers were different from zero at the 95-percent confidence level.