Table 5.
Stepwise backward regression models with starting model containing five independent variables and farm as random factor*.
| Dependent variable | Model Sr. No | Independent variables tested together in one model | p-values* | Variance inflation factor (vif) value |
|---|---|---|---|---|
| Brucella-iELISA outcome | 1 | Species | 0.003 | 1.01 |
| Age | 0.82 | 3.50 | ||
| Parity status | 0.16 | 3.44 | ||
| Reproductive disorders | 0.35 | 1.07 | ||
| BCS | 6.63e−14 | 1.06 | ||
| 2 | Species | 0.003 | 1.01 | |
| Parity status | 0.005 | 1.09 | ||
| Reproductive disorders | 0.33 | 1.06 | ||
| BCS | 5.48e−14 | 1.04 | ||
| 3 | Species | 0.002 | 1.01 | |
| Parity status | 0.001 | 1.03 | ||
| BCS | 1.83e−14 | 1.04 |
*
Variable showing least significance and high variance inflation factor (vif) value were taken out in next model; (Statistical value of significance: p ≤ 0.05).