TABLE 3.

Odds ratios and 95% confidence intervals for selected pathogens and ruminant and wildlife MST markers for all years of the study (2005 to 2011)^a

Pathogen	Bacteroidales marker	Lower 95% CI of OR	OR	Upper 95% CI of OR	P valueb
Salmonella spp.	Ruminant	1.00	6.37	40.67	0.050
	Wildlife	0.45	2.82	17.47	0.267
Arcobacter spp.	Ruminant	0.08	0.28	0.95	0.041*
	Wildlife	0.76	5.94	46.61	0.090
Norovirus GII	Ruminant	1.07	4.71	20.85	0.041*
Adjusted norovirus GIIc	Wildlife	0.01	0.17	3.01	0.228

^aNote that other pathogens did not have enough data support and/or had confidence intervals that straddled the value of 1 and therefore are not presented here. Only ruminant and wildlife markers were used here since they were deemed more directly influenced by CTD practices in these experimental watersheds.

^b*, result considered significant due to the confidence interval not bracketing unity and P < 0.05.

^cHere we added 0.5 within cells of the 2-by-2 matrix to perform OR and OR CI calculation due to a “zero” cell (i.e., there were no positive samples for both norovirus GII and Bacteroidales wildlife markers at the same site and time of sample).