Urinary arsenic profiles reveal exposures to inorganic arsenic from private drinking water supplies in Cornwall, UK

D. R. S. Middleton; M. J. Watts; E. M. Hamilton; E. L. Ander; R. M. Close; K. S. Exley; H. Crabbe; G. S. Leonardi; T. Fletcher; D. A. Polya

doi:10.1038/srep25656

Table 3

Correlation analysis of exposure and outcome variables for single volunteers per household.

	Spearman’s ρ (P value)
	Drinking Water As<1 μg/L (n = 65)	Drinking Water As1–10 μg/L (n = 47)	Drinking Water As>10 μg/L (n = 15)	Full range(n = 127)
Drinking Water As vs Urinary Total As	0.27 (P = 0.03)	0.42 (P = 0.004)	0.48 (P = 0.07)	0.40 (P < 0.001)
Drinking Water As vs U-As^IMM	0.23 (P = 0.06)	0.49 (P < 0.001)	0.69 (P = 0.005)	0.60 (P < 0.001)
Drinking Water As vs Osmolality Adjusted U-As^IMM	0.19 (P = 0.13)	0.54 (P < 0.001)	0.82 (P < 0.001)	0.62 (P < 0.001)

A strong correlation (bold font) is only observed for U-As^IMM (osmolality adjusted) for drinking water As >10 μg/L. One volunteer per household was chosen at random for inclusion in analyses.