Table 3.

Effect of exposure to untreated wastewater and partially treated wastewater on A. lumbricoides, hookworm, heavy hookworm and T. trichiura infection

	Water Quality
		OR	95% CI	P
A. lumbricoides a
River water	0 ova/L	1.0
Partially treated wastewater	12 ova/L	3.2	1.2 - 8.6	0.02
Untreated wastewater	70 ova/L	5.3	2.0 - 14	0.001
Hookworm b
River water	0 ova/L	1.0
Partially treated wastewater	15 ova/L	0.7	0.4 - 1.1	0.11
Untreated wastewater	76 ova/L	3.5	2.2 - 5.5	<0.001
Hookworm (epg>160) c
River water	0 ova/L	1.0
Partially treated wastewater	15 ova/L	0.8	0.3 - 2.2	0.65
Untreated wastewater	76 ova/L	3.9	1.5 - 9.9	0.004
T. trichiura d
River water	0 ova/L	1.0
Partially treated wastewater	0.3 ova/L	0.6	0.2 - 2.5	0.53
Untreated wastewater	4 ova/L	5.6	1.8 - 18	0.003

^aControlled for age, sex, education and household clustering

^bControlled for age, education, caste, latrine presence and household clustering

^cControlled for age, sex, education, type of water supply, agricultural activities involved in and household clustering

^dControlled for sex, education and household clustering