Variable	General			Group 1			Group 2			Group 3			Chi² test
Variable	n	%	CI	n	%	CI	n	%	CI	n	%	CI	Chi² test
Opportunity to use water
Kitchen	716	100a	0	256	100a	0	202	100a	0	258	100a	0	NS
Shower	716	99.02a	0.72	256	100a	0.00	202	97.03b	2.34	258	99.61ab	0.76	**
After toilet	716	48.46b	3.66	256	44.14b	6.08	202	47.03ab	6.88	258	53.88a	6.08
Before and after eating	716	52.23b	3.66	256	49.61b	6.12	202	43.56b	6.84	258	61.63a	5.93	***
Other	716	2.65c	1.18	256	0.78b	1.08	202	6.44a	3.39	258	1.55b	1.51	***
Water supply source
Tap water	704	42.05a	3.65	254	42.52b	6.08	200	52a	6.92	250	33.6c	5.86	***
Public drinking fountain	704	0.99e	0.73	254	1.18a	1.33	200	1.5a	1.68	250	0.4a	0.78	NS
Drilling	703	21.45b	3.03	254	18.11a	4.74	200	24a	5.92	250	22.8a	5.20	NS
Protected well	704	16.9b	2.77	254	11.81b	3.97	200	14.5b	4.88	250	24a	5.29	***
Unprotected well	704	21.31b	3.02	254	29.53a	5.61	200	8.5b	3.87	250	23.2a	5.23	***
Pond	704	4.83c	1.58	254	9.45a	3.60	200	2b	1.94	250	2.4b	1.90	***
Other	704	1.85d	1.00	254	1.97a	1.71	200	4a	2.72	250	0b	0.00	**
Home water storage
Covered container	704	86.93a	2.49	251	82.07b	4.75	200	93a	3.54	253	86.96b	4.15	**
Uncovered container	704	13.49b	2.52	251	19.92a	4.94	200	6.5c	3.42	253	12.65b	4.10	***
Other	704	1.42c	0.87	251	1.59a	1.55	200	0.5a	0.98	253	1.98a	1.72	NS
Frequent disinfection of drinking water
Yes	716	21.23b	3.00	256	25.78a	5.36	202	19.31a	5.44	258	18.22a	4.71	NS
No	716	78.77a	3.00	256	74.22a	5.36	202	80.69a	5.44	258	81.78a	4.71	NS
Mode of disinfection
By boiling	152	28.95b	7.21	66	25.76a	10.55	39	30.77a	14.49	47	31.91a	13.33	NS
By bleach	152	7.89c	4.29	66	9.09a	6.94	39	7.69a	8.36	47	6.38a	6.99	NS
Aquatabs	152	61.84a	7.72	66	62.12a	11.70	39	61.54a	15.27	47	61.7a	13.90	NS
Other	152	1.32d	1.81	66	3.03a	4.14	39	0a	0.00	47	0a	0.00	NS