Table 7.

Analysis of deviance, natural logarithms of odds ratio and standard error of common bean rust severity and likelihood ratio test on independent variables in reduced regression model.

Added variable	Residual deviance	df	CBR incidence LRTa		Variable class	Est.log	SE	Odds ratio
			DR	P > X2
Intercept	107.30		–	–		0.21	0.97	0.1
District	43.62	8	22.67	0.003	Mareko	− 0.45	1.65	0.7
					Meskan	− 0.16	1.42	1.9
					Lanfuro	0.20	2.04	0.1
					Sankura	0.32	1.74	0.1
					D. Fango	0.37	1.55	10.8
					D. Woide	0.24	1.79	0.1
					D. Gofa	0.62	1.84	0.01
					Oyida	0.50	1.91	0.03
					Boricha	*
Cropping system	66.29	1	41.01	< 0.000	Sole	0.67	1.24	117.6
					Intercropped	*

^aLRT = Likelihood ratio test; DR = Deviance reduction; P = Probability of χ² value exceeding the deviance reduction; CBR = common bean rust; SE = standard error.