Table 4. Final multivariable conditional logistic regression models (Comparing cases to all controls).
| Factors | Categories | Model 1 | Model 2 | Model 3 | |||
|---|---|---|---|---|---|---|---|
| Odds Ratio (95% CI) |
P-value | Odds Ratio (95% CI) |
P-value | Odds Ratio (95% CI) |
P-value | ||
| Did veterinarians vaccinate any livestock in your village against anthrax in the 2 years before DATE 1*? | Yes vs. No | 0.053 (0.002, 1.35) |
0.075 | 0.154 (0.01, 2.15) |
0.16 | 0.014 (<0.001, 0.99) |
0.049 |
| Don’t know vs. No | 0.247 (0.009, 6.70) |
0.41 | 0.351 (0.02, 6.30) |
0.48 | 2.27 (0.14, 37.51) |
0.57 | |
| Where were all of your animals [same species as case] during PERIOD 1? No vs Yes | Covered fenced area/barn | 0.065 (0.005, 0.83) |
0.036 | 0.32 (0.06, 1.74) |
0.19 | ||
| Local grazing land / pasture | 9.214 (0.58, 147.19) |
0.12 | |||||
| What is the source of water on the pastureland that your herd had access to during PERIOD 1? No vs Yes | River | 0.094 (0.006, 1.44) |
0.089 | 0.13 (0.01, 1.49) |
0.10 | ||
| Piped water | 23.19 (0.59, 914.01) |
0.09 | |||||
| What was the condition of the animal at DATE 1*? | Thin vs. normal | <0.001 (<0.001, >999.99) |
0.99 | <0.001 (<0.001, >999.99) |
0.99 | <0.001 (<0.001, >999.99) |
0.99 |
| Fat vs. normal | 38.48 (1.88, 788.84) |
0.018 | 6.104 (0.74, 50.61) |
0.09 | 32.43 (1.63, 646.69) |
0.023 | |
| Female Status | Pregnant vs. Heifer | 0.006 (<0.001, 0.73) |
0.037 | 0.016 (<0.001, 0.62) |
0.027 | 0.011 (<0.001, 0.95) |
0.047 |
| Milking/Dairy vs. Heifer | 0.003 (<0.001, 0.33) |
0.016 | 0.01 (<0.001, 0.27) |
0.006 | 0.004 (<0.001, 0.38) |
0.017 | |
| Dry vs. Heifer | 0.59 (0.002, 153.41) |
0.86 | 0.038 (<0.001, 8.40) |
0.24 | 0.41 (0.007, 25.95) |
0.68 | |
*Date 1: date of onset or death of case animal