Table 2.

Candidate Models for Examining the Culex Flavivirus Infection Status of Culex Mosquito Pools Collected During the 2011 Interepidemic and 2012 Epidemic Years at the Suburban Chicago Study Site

Model	AICc	ΔAIC	Akaike weight
tempb + precipc + habitatd + trap_typee	1193.39	0	0.38
WNVa + precip + habitat + trap_type	1194.29	0.9	0.24
WNV + temp + precip + habitat + trap_type	1195.42	2.03	0.14
habitat + trap_type	1196.26	2.87	0.09
temp + habitat + trap_type	1196.4	3.02	0.08
WNV + temp + habitat + trap_type	1198.41	5.03	0.03
WNV + habitat + trap_type	1198.27	4.88	0.03
WNV + temp + precip + trap_type	1233.1	39.71	0
WNV + temp + precip + habitat	1276.53	83.14	0
WNV + temp + precip	1308.91	115.52	0
WNV + temp + habitat	1277.97	84.59	0
WNV + precip + habitat	1275.18	81.79	0
temp + precip + habitat	1274.88	81.49	0
WNV + temp + trap_type	1234.46	41.08	0
WNV + precip + trap_type	1232.09	38.7	0
temp + precip + trap_type	1231.09	37.7	0
WNV + temp	1309.13	115.75	0
WNV + precip	1307.69	114.31	0
WNV + trap_type	1234.31	40.92	0
WNV + habitat	1277.34	83.95	0
temp + precip	1307.49	114.1	0
temp + trap_type	1232.49	39.1	0
temp + habitat	1276.46	83.08	0
precip + trap_type	1230.07	36.68	0
precip + habitat	1273.48	80.09	0
WNV	1308.57	115.18	0
Temp	1307.88	114.49	0
Precip	1306.21	112.82	0
trap_type	1232.33	38.94	0
Habitat	1275.75	82.36	0

Year was included as a random effect and pool size was included as an offset in all models to account for differences in average pool sizes between light and gravid traps. Models are arranged by Akaike weights with the model that has the highest weight listed first.

^aWNV infection status (positive = 1, negative = 0).

^bNighttime temperature.

^cPrecipitation frequency.

^dHabitat (residential or urban green space).

^eGravid or light trap.