Table 1.

Demographic characteristics of the sample

		No Exposure n (%)	Any source exposure n (%)
Age	18-24	555 (46.5%)	254 (49.8%)
	25-34	459 (38.5%)	196 (38.4%)
	35-44	171 (14.3%)	58 (11.4%)
	45+	8 (0.01%)	2 (0.003%)
Employment	Farmer	796 (66.5%)	275 (53.8%)
	Housewife	260 (21.7%)	102 (20.0%)
	Other	134 (11.2%)	129 (25.2%)
	Unemployed	7 (0.01%)	5 (0.01%)
Number of household possessions	1-2	418 (34.9%)	76 (14.9%)
	3-4	514 (42.9%)	229 (44.8%)
	5-6	230 (19.2%)	151 (29.5%)
	7-10	35 (3.0%)	55 (10.8%)
Residence	Urban	134 (11.2%)	91 (17.8%)
	Peri-Urban	234 (19.5%)	123 (24.1%)
	Rural	829 (69.2%)	297 (58.1%)
Education	None	309 (25.8%)	68 (13.3%)
	Primary	791 (66.1%)	324 (63.4%)
	Secondary	92 (7.7%)	111 (21.7%)
	Post-secondary	5 (0.04%)	8 (0.2%)