Table 1.

Prevalence rate of parasitic contamination on fresh leafy vegetables.

	Vegetable
	Lettuce (101)		Watercress (116)		Parsley (102)		Green onion (103)		Leek (108)		Total examined (530)
	Number	%	Number	%	Number	%	Number	%	Number	%	Number	%
Positive	46	45.5	48	41.3	35	34.3	17	16.5	11	10.7	157	29.6
Negative	55	54.5	68	58.7	67	65.6	86	83.5	97	89.8	373	70.3
Z test	0.899		1.89		3.34		9.16		13.68		10.27
P value	0.18		0.03∗		0.001∗		0.001∗		0.001∗ S		0.001∗

*Significant P value (P < 0.05).