Table 2.

Bivariate analysis of risk factors for Nipah virus infection, Haripur Upazila, Thakurgaon District, Bangladesh, February 2007

Risk factors	No. (%) of cases with this risk factor	No. (%) of controls with this risk factor	OR	95% CI	P value
Male sex	4 (67%)	8 (38%)	3·25	0·48–22	0·2
Climbed trees	1 (17)	4 (19%)	0·85	0·07–9·4	1·00
Physical contact with living animal
Pig	0 (0%)	0 (%)	Undefined
Fruit bat	0 (0%)	0 (0%)	Undefined
Cow	4 (67%)	13 (62%)	1·23	0·182–8·33	1·00
Goat	2 (33%)	9 (43%)	0·67	0·099–4·5	1·00
Ate any animal that had been sick	0 (0%)	1 (5%)	Undefined		1·00
Drank raw date palm sap	1 (17%)	0 (0%)	Undefined		0·22
Visited the index case in a hospital	6 (100%)	0 (0%)	Undefined		<0·001
Touched the index case when he was sick	5 (83·3%)	0 (0%)	Undefined		<0·001
Been present in the same room with the index case when he was sick	6 (100%)	2 (9·5%)	Undefined		<0·001
Been present in the same room with the index case when he was coughing	6 (100%)	0 (0%)	Undefined		0·04

OR, Odds ratio; CI, confidence interval.