Table 2.

Time factor of the HEV seroprevalence. N denotes the number of animals; OR is the odds ratio; 95% CI confidence interval; p—p-value and in the brackets [the chi-square statistic for each cell].

Variable	N	HEV Positive	HEV Negative	OR (95% CI)	p
2017	75	34 (55.67) [8.43]	41 (19.33) [24.28]	1.3 (95% CI: 0.69–2.5)	0.3894
2018	78	30 (57.89) [13.44]	48 (20.11) [38.69]	0.75 (95% CI: 0.39–1.43)	0.3894
2019	200	198 (148.44) [16.55]	2 (51.56) [47.64]	1.8984 (95% CI: 1.22–2.94)	0.0044