Table 6.
Analysis of deviance, natural logarithms of odds ratio and standard error of common bean rust incidence and likelihood ratio test on independent variables in reduced regression model.
| Added variable | Residual deviancea | df | CBR incidence LRTb | Variable class | Est.logc | SEd | Odds ratio | |
|---|---|---|---|---|---|---|---|---|
| DR | P > χ2 | |||||||
| Intercept | 105.60 | – | – | − 0.45 | 0.74 | 0.3 | ||
| District | 62.29 | 8 | 24.35 | 0.001 | Mareko | − 0.27 | 1.23 | 0.5 |
| Meskan | − 0.07 | 1.35 | 2.3 | |||||
| Lanfuro | 0.31 | 1.43 | 0.05 | |||||
| Sankura | 0.65 | 1.55 | 0.01 | |||||
| D. Fango | − 0.25 | 1.37 | 1.7 | |||||
| D. Woide | 0.31 | 1.43 | 0.1 | |||||
| D. Gofa | − 0.09 | 1.07 | 0.4 | |||||
| Oyida | 0.27 | 1.11 | 0.1 | |||||
| Boricha | * | |||||||
| Cropping system | 86.65 | 1 | 18.95 | < 0.000 | Sole | 0.46 | 0.87 | 2.9 |
| Intercropped | * | |||||||
aLRT = Likelihood ratio test; DR = deviance reduction; P = probability of χ2 value exceeding the deviance reduction; CBR = common bean rust; SE = standard error.