Table 4.
Parameter estimates and adjusted odds ratios for the multivariable logistic regression model predicting residential risk factors for exposure to Y. pestis in areas classified as elevated and low risk
| Model covariates | Parameter estimate | Likelihood ratio test | Odds ratios | ||||
|---|---|---|---|---|---|---|---|
| Estimate | SE | χ2 | df | P value | aOR | 95% CI | |
| Intercept | −1.23 | 0.54 | 5.17 | 1 | 0.02 | ||
| Water available to rodents | −0.26 | 0.44 | 0.36 | 1 | 0.55 | 0.77 | 0.32–1.83 |
| Corn grown or dried within 30 m | 1.13 | 0.46 | 6.14 | 1 | 0.01 | 3.1 | 1.28–7.73 |
| Other crops grown or dried within 30 m | 0.97 | 0.51 | 3.92 | 1 | 0.047 | 2.65 | 1.01–7.44 |
| Processed commercial foods stored within residence | −1.06 | 0.46 | 5.42 | 1 | 0.02 | 0.35 | 0.13–0.85 |
SE = standard error; aOR = adjusted odds ratio; df = degrees of freedom.