Table 3.

Results from univariable logistic regression modelling seropositivity to CSGV associated with environmental factors in humans from Québec, Canada, 2014

	No.	% pos.	P-value (type III)	OR	95% CI	P-value
Pools of standing water on the property			0.006
None	180	21		Refa
Small	92	17		0.79	0.41–1.50	0.47
Large	49	41		2.58	1.32–5.05	0.006
Hardwood forestb			0.005
<8.8%c	159	16		Ref
⩾8.8%	162	30		2.15	1.26–3.69	0.005
Coniferous forestb			0.071
<0.7%d	198	20		Ref
⩾0.7%	123	28		1.62	0.96–2.74	0.071
Wooded wetlandsb			0.108
<1.6%e	237	25		Ref
⩾1.6%	84	17		0.59	0.31–1.12	0.108
Non-wooded wetlandsb			0.06
<0.3%d	236	20		Ref
⩾0.3%	85	31		1.73	0.99–3.02	0.06
Developed landsb			0.044
<37%c	162	28		Ref
⩾37%	159	18		0.58	0.34–0.99	0.044
Agricultural landsb			0.86
<9.8%c	159	23		Ref
⩾9.8%	162	23		1.05	0.62–1.76	0.86
Surface waterb			0.98
<2.1%c	161	23		Ref
⩾2.1%	160	23		1.01	0.60–1.70	0.98
Disturbed landsb			0.52
<0.009%d	235	22		Ref
⩾0.009%	86	26		1.21	0.68–2.15	0.52
No. of adult male white-tailed deer harvested			0.006
0	137	15		Ref
1–6	92	33		2.83	1.49–5.39	0.002
>6	92	26		2.07	1.06–4.01	0.033

^aReference category.

^bPercentage of the area covered by each land cover within a radius of 2 km radius centred on the house.

^cMedian as category cut-off.

^dThe first three quartiles were grouped as the median value was 0.

^eThe first three quartiles were grouped as no statistically significant difference was observed between these categories.