Table 5.

Statistical model coefficients by month for the relationship between weather variables and prevalence of bacteria along the agri-food chain in Canada from 2002 through 2012

Outcome	Independent variables
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Deca
Poultry
Salmonella Retail	NS	NS	NS	NS	NS	NS	NS	NS	NS	NS	NS	0
Salmonella Abattoir	0.0745	−0.051	−0.166	−0.091	−0.206	−0.2645	−0.1347	−0.0311	0.0415	0.2461	0.3397	0
Campylobacter Retail	−0.0141	−0.2493	−0.1155	−0.2572	−0.2687	−0.0576	0.2249	0.2399	0.3471	0.1269	0.0607	0
Campylobacter Abattoir	−0.4373	−0.4755	−0.8203	−0.1125	−0.5445	0.1925	0.3985	0.1974	0.7626	0.6572	0.286	0
Beef
E. coli Retail	−0.0413	−0.0924	−0.0485	−0.2403	0.1632	0.1637	−0.0761	0.0206	0.1917	−0.0313	0.1383	0
Swine
Salmonella Retail	NS	NS	NS	NS	NS	NS	NS	NS	NS	NS	NS	0
Salmonella Abattoir	0.1772	−0.0531	−0.1394	−0.0628	−0.0548	−0.2934	0.1179	−0.0474	0.0298	0.193	0.1206	0
Salmonella On-farm	−0.0224	0.5105	0.367	−0.518	0.328	−0.7546	0.1873	−0.0111	−0.3833	0.2313	0.2235	0
Campylobacter Retail	0.0866	−0.1979	−0.2447	−0.3805	−0.3513	−0.3255	0.1936	0.3511	0.428	0.2471	0.2072	0
Campylobacter Abattoir	−0.2907	−0.1992	−0.2033	0.2792	−0.0683	0.1115	0.2839	0.1426	0.5785	0.296	−0.176	0
E. coli Retail	−0.1576	−0.2137	−0.2989	0.00037	−0.0788	0.0523	0.2182	0.4276	0.1482	0.00296	−0.1045	0

NS, No significant relationship at significance level of 5%.

Coefficients indicate a positive or negative associated between month and outcome variable.

^aDecember was selected as the baseline month to which all other months were compared.