Table 2.

Percentages of drinking water type consumed at home, use of pools and duration of bath/shower by educational level

	Illiterate		Primary school incomplete		Primary school complete		High school or higher education		p-value	TOTAL
	n	%	n	%	n	%	n	%		n	%
Source of drinking water, currently
Tap water	243	69%	131	61%	265	62%	116	57%		755	63%
Bottled	59	17%	54	25%	99	23%	67	33%		160	23%
Springs and wells	48	14%	29	14%	61	14%	22	11%	0.003	279	14%
Current average residential THM level (μg/l)
Low (<= 48 μg/l)	103	48%	69	46%	155	54%	59	38%		386	48%
High (>48 μg/l)	111	52%	80	54%	133	46%	97	62%	0.014	421	52%
Source of drinking water at the longest residence
Tap water	227	63%	126	57%	258	58%	136	64%		747	61%
Bottled	39	11%	40	18%	67	16%	44	21%		190	15%
Springs and wells	96	26%	54	25%	116	26%	32	15%	0.002	298	24%
Lifetime average residential THM level, from age 15 (μg/l)
Low (<= 26 μg/l)	132	59%	62	47%	155	54%	59	39%		408	51%
High (<26 μg/l)	93	41%	71	53%	133	46%	91	61%	0.002	388	49%
Ever swimming pool attendance
No	259	93%	162	89%	307	88%	134	74%		862	87%
Yes	21	7%	21	11%	41	12%	46	26%	<0.001	129	13%
Showers/baths
Short (<= 7 min/day)	150	60%	87	52%	179	55%	77	44%		493	54%
Long (>7 ming/day)	99	40%	81	48%	149	45%	98	56%	0.010	427	46%

Note: the sum of the columns for the different variables may not be equal due to missing values