Table 2.

Results of the generalized linear mixed-effects models (GLMM) and general linear mixed-effects models (LME) of best fit for nematode infection prevalence and mean intensity, respectively, from rabbits sampled seasonally in Scotland before and after the arrival of RHDV. All comparisons are made against the intercept of the first level of each factor, i.e. Absent for RHDV and Spring for season. Test statistic (z values) are marked as: ****P < 0.001, ***P < 0.01, **P < 0.05.

Parasite species	Fixed effects		Prevalence Models				Mean Intensity Models
	Factor	Level	Estim.	SE	z value	Pr (>|z|)	Estim.	SE	t value	P value
Trichostrongylus retortaeformis	RHDV	Absent vs. Present	0.44	0.2	2.16	0.031**	0.44	0.09	5.1	<0.0001
	Season	Spring vs. Summer	0.64	0.23	2.76	0.006***	0.72	0.12	5.89	<0.0001
		Spring vs. Autumn	1.02	0.32	3.23	0.0012***	0.38	0.14	2.69	0.007
		Spring vs.Winter	1.44	0.34	4.21	2.6 × 10−5****	0.37	0.15	2.45	0.014
	RHDV:Season	Present:Summer	−0.79	0.37	−2.14	0.032 **	–	–	–	–
		Present:Autumn	−0.23	0.47	−0.5	0.618	–	–	–	–
		Present:Winter	−0.89	0.47	−1.88	0.06	–	–	–	–
Graphidium strigosum	RHDV	Absent vs. Present	1.18	0.15	7.7	1.35 × 10−14****	1.37	0.2	6.82	<0.0001
	Season	Spring vs. Summer	−0.52	0.18	−2.89	0.0038***	−0.82	0.2	−4.06	0.0001
		Spring vs. Autumn	1.03	0.25	4.04	5.33 × 10−5****	−0.22	0.2	−1.1	0.27
		Spring vs. Winter	1.32	0.3	4.49	7.15 × 10−6****	0.91	0.2	4.5	<0.0001
	RHDV:Season	Present:Summer	–	–	–	–	−0.76	0.27	−2.75	0.006
		Present:Autumn	–	–	–	–	−0.8	0.28	−2.79	0.005
		Present:Winter	–	–	–	–	−0.7	0.29	−2.41	0.016
Passalurus ambiguus	RHDV	Absent vs. Present	−0.33	0.32	−1.03	0.303	1.09	0.32	3.35	0.001
	Season	Spring vs. Summer	−1.71	0.38	−4.53	5.91 × 10−6****	0.09	0.51	0.17	0.86
		Spring vs. Autumn	0.19	0.3	0.64	0.52	1.1	0.44	2.48	0.014
		Spring vs. Winter	0.08	0.31	0.26	0.79	0.84	0.44	1.91	0.058
	RHDV:Season	Present:Summer	1.95	0.49	4.01	6.14 × 10−5****	–	–	–	–
		Present:Autumn	0.61	0.44	1.38	0.17	–	–	–	–
		Present:Winter	1.46	0.45	3.21	0.001***	–	–	–	–