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Table 3 Spearman’s correlation (r) for toxic metal levels in children’s toenails (n = 20) and blood (n = 17)

From: Toxic metal levels in children residing in a smelting craft village in Vietnam: a pilot biomonitoring study

Metala Cd-N Cr-N Pb-N Mn-N Hg-N Pb-B
As-N 0.59* 0.07 0.42 0.58* −0.10 0.00
Cd-N   0.26 0.66* 0.60* 0.03 0.04
Cr-N    0.02 0.72** 0.26 −0.43
Pb-N     0.33 0.02 0.65*
Mn-N      0.01 −0.30
Hg-N       −0.32
  1. *p < 0.05.
  2. **p < 0.001.
  3. aB denotes blood metal levels. N denotes toenail metal levels.