Seroprevalence and Risk Factors Associated with Hepatitis E Virus Infection in Three Species of Pet Birds in Northwest China

Table 2

Analysis of the variables associated with HEV seroprevalence in pet birds in northwest China.

Variable	Category	Number of tested	Number of positive	Prevalence % (95% CI)	value	OR (95% CI)
Region	Tianshui	289	12	4.15 (1.85–6.45)		Reference
	Lanzhou	196	31	15.82 (10.71–20.93)	<0.001	4.34 (2.17–8.68)
	Longnan	200	16	8.00 (4.24–11.76)	0.072	2.01 (0.94–4.34)
Gender	Male	419	39	9.31 (6.53–12.09)		Reference
	Female	266	20	7.52 (4.35–10.69)	0.416	0.79 (0.45–1.39)
Species	Black-tailed grosbeak	36	1	2.29 (0.00–8.15)		Reference
	Oriental skylark	289	19	6.57 (3.72–9.43)	0.371	2.38 (0.31–18.29)
	Eurasian siskin	360	39	10.83 (7.62–14.04)	0.126	4.25 (0.57–31.91)
Age	Juvenile	145	3	2.07 (0.00–4.39)		Reference
	Adult	540	56	10.37 (7.80–12.94)	0.002	5.48 (1.69–17.76)
Total		685	59	8.61 (6.51–10.71)