Table 3. Summary of AICc (Akaike’s Information Criterion corrected for small sample size) model selection of rat lungworm (Angiostrongylus cantonensis) infection in rats (Rattus spp.) sampled on east Hawai‘i Island for five independent generalized linear model (GLM) analyses (A-E).

(A) Prevalence of adult worms, (B) intensity of adult worms, (C) prevalence of encysted worms, (D) prevalence of third stage larvae in the lungs, (E) prevalence of granular lung lobes. Model factors include host characteristics (body mass, species, and sex) and sampling location (site); numbers preceding models indicate model rank within each analysis; k = number of parameters in the models.

Analysis	Model	k	Log-Likelihood	AICc	ΔAICc
(A) Prevalence of adult worms	1. Mass*Species†	7	-90.889	200.23	0.00
	2. Mass*Species† + Sex	8	-90.120	200.24	0.01
(B) Intensity of adult worms	1. Mass†	6	-843.809	1699.94	0.00
	2. Sex*Species†	3	-846.450	1701.05	1.11
	3. Species + Mass	7	-843.328	1701.08	1.14
	4. Species†	2	-848.617	1701.28	1.34
(C) Prevalence of encysted worms	1. Mass† + Site	16	-80.695	194.79	0.00
	2. Mass*Species† + Site	17	-77.899	195.77	0.98
	3. Mass† + Site + Species	17	-80.461	196.50	1.71
(D) Prevalence of 3rd stage (L3) larvae	1. Species† + Site†	12	-83.916	192.76	0.00
	2. Species† + Site† + Sex	13	-83.472	192.95	0.19
	3. Sex*Species† + Site†	13	-82.029	193.31	0.55
	4. Species† + Site† + Mass	17	-79.074	193.99	1.23
	5. Species† + Site† + Sex + Mass	18	-78.128	194.33	1.57
	6. Sex*Species† + Site† + Mass	18	-77.020	194.34	1.58
(E) Prevalence of granulated lobes	1. Mass*Species† + Site	17	-76.783	193.862	0.00
	2. Mass*Species† + Site + Sex	18	-76.638	195.820	1.96

^† Indicates a significant variable or interaction in the model (P < 0.05); asterisks (*) denote interaction terms.