Table 2.

Selected risk factors of the cholera outbreak at Haibatpur village, Purba Medinipur district, West Bengal, India, 2012.

Risk factors	Population				Odds ratio	95% CI*
	Cases		Controls
	Number	%	Number	%
Pond water used for fermented rice preparation	30	73	15	37	4.73	1.69–13.51
Pond water used for washing utensils	38	93	26	63	7.31	1.77–42.29
History of diarrhea contact	29	70	17	42	3.41	1.25–9.47
No hand wash before eating properly	39	95	25	61	12.48	2.52–117.69
Tube well water used for drinking purpose	34	83	35	85	0.83	0.21–3.24
Open defecation practice	10	24	5	12	2.32	0.63–9.54
Hand washing practice after defecation with soap	18	44	37	90	0.08	0.02–0.31

*CI: confidence interval.