. 2008 Oct 7;117(3):410–416. doi: 10.1289/ehp.11886

Table 4.

Correlation coefficients (r) for the concentration of As versus the concentrations of toxic elements in tube well water from each of the four neighborhoods in this study, along with the characteristics of these tube wells.

	As
Element	Bualda	Fulbaria	Jamjami	Komlapur
As	1.00^a	1.00^a	1.00^a	1.00^a
B	0.91^a	0.18	−0.03	−0.19
Ba	0.16	0.14	0.69^a	0.74^a
Cr	0.91^a	0.23	0.45	0.60^b
Fe	0.91^a	0.21	0.61^a	0.66^a
Mn	0.49^b	0.33	−0.04	−0.39
Mo	0.21	0.09	−0.24	0.27
Ni	0.91^a	0.25	0.49^b	0.30
Pb	0.91^a	0.20	0.52^b	0.24
Sb	0.37	−0.18	0.39	0.26
Se	0.40	0.14	0.47	0.53^b
U	0.03	−0.16	−0.55^b	−0.30
Zn	0.96^a	−0.14	0.34	0.06
pH	0.27	−0.32	0.09	0.08
Depth	0.07	−0.09	−0.69^a	−0.03
Age	−0.19	0.03	−0.34	0.01
Users	−0.23	−0.17	−0.33	−0.26

Linear relationships without a footnote are not significant at either confidence level.

Significant linear relationships at the 99% confidence level.

Significant linear relationships at the 95% confidence level