Consumption of low-moderate level arsenic contaminated water does not increase spontaneous pregnancy loss: a case control study

Table 2 Distribution of inorganic arsenic (iAs) exposure indices by case–control status

Factor	Cases (n = 150)			Controls (n = 150)			P-value^a
Factor	Mean	Median	Range	Mean	Median	Range	P-value^a
Daily water consumption (L)^b	1.49	1.50	0.5-5.0	1.26	1.20	0.0-4.0	0.002
Average iAs (μg/L)^c	4.06	0.17	0-175.10	4.32	1.28	0-130.30	0.169
Peak iAs (μg/L)^d	4.64	0.17	0-175.10	4.99	2.27	0-130.30	0.121
Daily iAs (μg/day)^e	7.10	0.24	0-350.20	5.16	1.45	0-83.15	0.130

^aWilcoxon signed-rank test; ^baverage water consumed from non-bottled sources, including direct consumption, teas, coffees, mixed beverages and soups; ^cmean iAs level measured in up to two residential drinking water sources; ^dthe highest iAs concentration measured in up to two residential drinking water sources; ^eproduct of ‘daily water consumption’ multiplied by ‘average iAs.’

ISSN: 1476-069X