Ectoparasites of European hedgehogs (Erinaceus europaeus) in Germany and their health impact

Parasites & Vectors

Table 6 Results of the binomial GLM testing the influence of sampling month, sampling year, sex, age, weight and health status on the infestation rate of European hedgehogs with the mite Caparinia tripilis

Variables tested in GLM model	GLM model^a
Variables tested in GLM model	Estimate	SE	Z	P
Intercept	− 17.01	968.50	− 0.02	0.986
Sampling month (reference month: January)
February	− 2.34	1.17	− 2.00	0.045*
March	0.05	0.94	0.06	0.954
April	− 0.76	0.89	− 0.85	0.393
May	− 1.92	0.90	− 2.14	0.032*
June	− 2.42	0.95	− 2.53	0.011*
July	− 2.44	0.96	− 2.55	0.011*
August	− 2.09	0.96	− 2.17	0.030*
September	− 2.86	1.04	− 2.76	0.006*
October	− 2.86	1.12	− 2.55	0.011*
November	− 1.40	1.05	− 1.34	0.182
December	0.71	1.08	0.66	0.510
Sampling year (reference year: 2018)
2019	0.51	0.74	0.68	0.494
2020	1.36	0.73	1.85	0.065
2021	1.41	0.88	1.62	0.106
Sex (reference: male)	− 0.47	0.30	− 1.56	0.120
Age (reference age: subadult)	2.16	0.62	3.50	< 0.001*
Weight	0.00	< 0.01	− 0.12	0.902
Health status (reference status: not impaired)
Moderately impaired	14.48	968.50	0.02	0.988
Severely impaired	15.14	968.50	0.02	0.988

GLM Generalised linear model, SE Standard Error
*Statistically significant at P ≤ 0.05
^aThe GLM model was significantly different from a null model (Chi-square = 80.7, df = 19, P < 0.001)

ISSN: 1756-3305