Table 4.

Coefficient estimates for the top-ranked models (i.e., models with Δ AIC_c ≤ 2.0) of factors influencing exposure to C. burnetii, T. gondii, and Brucella spp. of adult (≥5 yrs old) and subadult (2–4 yrs old) polar bears captured on the coast and sea ice of the southern Beaufort Sea, Alaska, USA, 2007–2014.

Pathogen	Model Rank	Explanatory Variables	Estimate (β) (85% CI)	S.E.	P-value	Odds Ratio (95% CI)
C. burnetii	1	age	1.16 (0.03–2.28)	0.78	0.148	3.18 (0.65–15.63)
	2	age	1.13 (0.01–2.25)	0.78	0.16	3.08 (0.62–15.21)
		sex	0.41 (−0.15–0.97)	0.39	0.308	1.51 (0.67–3.38)
	3	year of capture	−0.09 (−0.19–0.01)	0.07	0.205	0.91 (0.78–1.06)
	4	sex	0.44 (−0.12–1.00)	0.39	0.267	1.55 (0.70–3.45)
T. gondii	1	habitat use	1.95 (1.27–2.63)	0.47	<0.001	7.01 (2.66–18.49)
	2	habitat use	1.87 (1.18–2.56)	0.48	<0.001	6.51 (2.42–17.56)
		sex	−0.35 (−1.06–0.36)	0.49	0.482	0.71 (0.26–1.92)
	3	habitat use	1.88 (1.19–2.57)	0.48	<0.001	6.57 (2.45–17.66)
		age	0.65 (−0.62–1.92)	0.88	0.47	1.91 (0.31–11.62)
Brucella spp.	1	sex	−0.87 (−1.66– −0.78)	0.55	0.123	0.42 (0.14–1.29)
		habitat use	−0.86 (−1.71– −0.01)	0.59	0.154	0.42 (0.13–0.14)
	2	habitat use	−0.86 (−1.71– −0.01)	0.59	0.156	0.42 (0.13–1.42)
		year of capture	−0.15 (−0.28– −0.02)	0.09	0.148	0.38 (0.70–1.06)
	3	sex	−0.65 (−1.39–0.09)	0.52	0.221	0.52 (0.18–1.52)
	4	habitat use	−0.63 (−1.44–0.02)	0.56	0.277	0.54 (0.17–1.70)
	5	year of capture	−0.11 (−0.24–0.02)	0.09	0.27	0.89 (0.73–1.09)
	6	age	−0.68 (−1.61–0.24)	0.64	0.303	0.51 (0.13–1.91)
	7	sex	−0.75 (−1.56–0.06)	0.56	0.196	0.47 (0.15–2.39)
		habitat use	−0.97 (−1.88– −0.06)	0.63	0.131	0.38 (0.11–1.36)
		year of capture	−0.15 (−0.29– −0.01)	0.1	0.151	0.86 (0.69–1.06)
		age	−0.59 (−1.61–0.43)	0.71	0.415	0.55 (0.13–2.39)
	8	sex	−0.62 (−1.38–0.14)	0.53	0.249	0.54 (0.18–1.59)
		age	−0.62 (−1.56–0.32)	0.65	0.354	0.54 (0.14–2.06)