Table 2. Univariate results for the four years.

Variable		Year one	Year two	Year three	Year four
Population density	OR (95% CI)	0.95 (0.91–1.00)	0.91 (0.83–0.99)	0.90 (0.79–1.02)	0.93 (0.89–0.98)
	p -value	0.05	0.03	0.09	0.006
Predicted suitability for G. fuscipes	OR (95% CI)	0.95 (0.91–0.99)	1.04 (1.00–1.09)	1.09 (1.03–1.15)	1.07 (1.03–1.12)
	p -value	0.01	0.05	<0.005	<0.005
Elevation	OR (95% CI)	1.02 (1.00–1.04)	0.99 (0.97–1.00)	0.96(0.94–0.99)	0.98 (0.97–0.99)
	p -value	0.03	0.15	<0.005	0.008
Distance to livestock market	OR (95% CI)	0.69 (0.57–0.85)	0.91 (0.84–0.98)	0.97 (0.91–1.04)	0.96 (0.92–1.01)
	p -value	<0.005	0.009	0.44	0.11
“woodland and dense savannah” (1 km)+	OR (95% CI)	0.98 (0.94–1.01)	0.93 (0.88–0.98)	0.91 (0.86–0.96)	0.92 (0.89–0.96)
	p-value	0.16	0.008	<0.005	<0.005
“Seasonally flooding grass” (3 km)++	OR (95% CI)	0.94 (0.89–0.99)	1.01 (0.97–1.06)	1.11 (1.02–1.21)	1.08 (1.02–1.14)
	p-value	0.02	0.69	0.02	0.007

Unadjusted odds ratios (OR), 95% confidence intervals (CI) and p-vales where calculated using conditional logistic regression.

⁺Proportion of land within 1 km which is “woodland and dense savannah.”

⁺⁺Proportion of land within 3 km which is “seasonally flooding grassland.”