Table 2.

Comparison of the prevalence of children < 4.5 years of age with children ≥ 4.5 years of age who had at least one serological episode to Entamoeba histolytica, Cryptosporidium parvum, and Giardia intestinalis

Organism	% Children < 4.5 years of age with serological episode	% Children ≥ 4.5 years of age with serological episode	P value*
Entamoeba histolytica	64.9 (85/131)	62.9 (78/124)	0.840
Cryptosporidium parvum	78.5 (102/130)	68.0 (85/125)	0.079
Giardia intestinalis	91.7 (121/132)	62.1 (77/124)	< 0.001

^*Statistical method, z test.