Table 1.

Factors associated with prevalence of Giardia duodenalis in farmed pigs.

Factor	Category	No. of Tested	No. Positive	No. of Positive (%) (95% CI)	p-Value
Region	Yunnan	200	5	2.5 (0.34–4.66)	0.01
	Zhejiang	124	13	10.5 (5.09–15.87)
	Guangdong	72	3	4.2 (0–8.79)
Gender	Female	217	6	2.8 (0.58–4.94)	0.02
	Male	179	15	8.4 (4.32–12.44)
Age	1–3 months	87	2	2.3 (0–5.45)	0.01
	4–6 months	73	9	12.3 (4.79–19.87)
	>6 months	236	10	4.2 (1.67–6.81)
Total		396	21	5.3 (3.09–7.51)