Table 2.
Parameter estimates and adjusted odds ratios for the multivariable logistic regression model predicting risk factors for exposure to Y. pestis in case and control villages
| Model covariates | Parameter estimate | Likelihood ratio test | Odds ratios | ||||
|---|---|---|---|---|---|---|---|
| Estimate | SE | χ2 | df | P value | aOR | 95% CI | |
| Intercept | 0.63 | 1.07 | 0.35 | 1 | 0.55 | ||
| Peridomestic pig | 0.34 | 0.22 | 2.40 | 1 | 0.12 | 1.99 | 0.84–4.88 |
| Bedding material (other) | −1.36 | 0.59 | 8.24 | 1 | 0.004 | 0.07 | 0.003–0.46 |
| Distance to neighboring homestead | 0.07 | 0.03 | 8.49 | 1 | 0.004 | 1.08 | 1.02–1.14 |
| Landsat ETM+ band 6 | −0.06 | 0.02 | 11.78 | 1 | 0.0006 | 0.94 | 0.90–0.97 |
SE = standard error; aOR = adjusted odds ratio; df = degrees of freedom.