TABLE 3.

Population density as a risk factor analysis results

Parasite grouping	Rural versus mixed		Rural versus urban		Mixed versus urban
	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
All parasites	1.84 (1.42–2.37)	<0.01		0.09	0.62 (0.49–0.79)	<0.01
Giardia lamblia and Cryptosporidium only	2.29 (1.57–3.36)	<0.01	1.93 (1.52–2.45)	<0.01		0.42
Dientamoeba fragilis only	1.76 (1.17–2.64)	<0.01	1.57 (1.21–2.05)	<0.01		0.64
Rare parasites		0.87	0.26 (0.17–0.39)	<0.01	0.27 (0.15–0.46)	<0.01