Table 2.

GEE linear regression model of factors associated with the prevalence of C. daubneyi, F. hepatica and H. cylindracea within populations of G. truncatula on Welsh farms.

Model	QICC	Variable	β	S.E	95% CI	Wald χ 2	Sig.
C. daubneyi prevalence%	3.383	Intercept	0.0121	0.0082	−0.004: 0.028	2.17	0.14
		C. daubneyi EPG	0.0015	0.0002	0.001: 0.002	42.57	0.000
F. hepatica prevalence%	4.538	Intercept	0.0292	0.0131	0.003: 0.055	4.95	0.026
		F. hepatica EPG	0.0115	0.0006	0.010: 0.013	418.8	0.000
H. cylindracea prevalence% 1	5.607	Intercept	0.068	0.0344	0.000: 0.135	3.89	0.049
		C. daubneyi snail prevalence%	0.69	0.1438	0.408: 0.972	23.07	0.000
H. cylindracea prevalence% 2	5.802	Intercept	0.109	0.0316	0.047: 0.171	11.97	0.001
		F. hepatica cercariae snail prevalence%	−0.297	0.1034	−0.50: −0.095	8.26	0.004

EPG = eggs per gram of faeces shed onto pasture.