Table 2.

Factors associated with prevalence of T. buttreyi and P. hominis in donkeys in Shanxi Province, North China.

Species	Factor	Category	No. Positive/No. Tested	Prevalence % (95% CI)	OR (95% CI)	p-Value
T. buttreyi	Region	Jinzhong	16/81	19.8 (11.1–28.4)	Ref.	<0.001
		Linfen	115/363	31.7 (26.9–36.5)	1.9 (1.0–3.4)
		Datong	76/371	20.5 (16.4–24.6)	1.1 (0.6–1.9)
	Age	≥3 years	160/601	26.6 (23.1–30.2)	1.3 (0.9–1.9)	0.179
		<3 years	47/214	22.0 (16.4–27.5)	Ref.
	Sex	Male	15/120	12.5 (6.6–18.4)	Ref.	<0.001
		Female	192/695	27.6 (24.3–31.0)	2.7 (1.5–4.7)
		Sub-total	207/815	25.4 (22.4–28.4)
P. hominis	Region	Jinzhong	0/81	0		0.428
		Linfen	2/363	0.6 (0.0–1.3)	Ref.
		Datong	4/371	1.1 (0.0–2.1)	2.0 (0.4–10.8)
	Age	≥3 years	2/601	0.3 (0.0–0.8)	Ref.	0.024
		<3 years	4/214	1.9 (0.1–3.7)	5.7 (1.0–31.4)
	Sex	Male	2/120	1.7 (0.0–4.0)	2.9 (0.5–16.2)	0.197
		Female	4/695	0.6 (0.0–1.1)	Ref.
		Sub-total	6/815	0.7 (0.2–1.3)