Table 4. Logistic regression showing odds and adjusted odds for mortality for selected variables in the two outbreaks.

		Un-adjusted analysis			Model 1			Model 2 : without neurological signs
Variable		OR	95% CI	P value	AOR	95% CI	P value	AOR	95% CI	P value
Outbreak	1	1			1			1
	2	14.1	(2.9-68.9)	0.001	6.6	(0.8-52.0)	0.074	10.1	(1.4-73.0)	0.007
Days to presentation	1	1			1			1
	Per extra Day	1.2	(1.1-1.3)	0.003	1.2	(1.0-1.4)	0.003	1.2	(1.1-1.3)	0.033
Occupation	Civil servants	1			1			1
	Health worker	1.7	(0.3-9.8)	0.572	2.7	(0.2-30.0)	0.426	2.7	(0.2-11.3)	0.426
	Trader	1.1	(0.2-5.7)	0.930	1.6	(0.2-14.8)	0.666	1.6	(0.2-9.5)	0.666
	Farmer	4.7	(0.8-26.2)	0.080	2.1	(0.2-23.4)	0.534	2.1	(0.2-18.7)	0.534
	Student	1.3	(0.1-6.3)	0.778	0.8	(0.1-8.0)	0.834	0.8	(0.1-5.5)	0.834
	Children		0.8	(0.1-6.3)	0.814	Empty	Empty	Empty	Empty
Location	Rural	1			1			1
	Urban	0.8	(0.3-1.9)	0.576	2.6	(0.5-12.2)	0.235	2.2	(0.6-8.0)	0.229
Neurological signs	None	1			1
	At least one	24.1	(6.2-92.3)	<0.01	14.1	(3.1-65.0)	0.001

OR, odd ratio; AOR, adjusted odd ratio