PMC full text:
Published online 2010 Jul 10. doi: 10.1186/1476-069X-9-36
Table 2
Hair & nail arsenic concentrations and their correlations with water arsenic concentrations
| Water arsenic exposure | n | Hair arsenic concentration | Nail arsenic concentration | ||
|---|---|---|---|---|---|
| [μg/g (Mean ± SD)] | Spearman r | [μg/g (Mean ± SD)] | Spearman r | ||
| Low (< 129) | 44 | 1.83 ± 3.00 | 0.413** | 3.51 ± 4.41 | 0.421** |
| Medium (130-264) | 50 | 4.08 ± 2.60 | 0.489** | 6.32 ± 5.62 | 0.384* |
| High (> 265) | 47 | 9.74 ± 10.13 | 0.464** | 12.51 ± 9.13 | 0.499*** |
| All subjects | 141 | 5.27 ± 7.06 | 0.524*** | 7.51 ± 7.64 | 0.541*** |
Here *p < 0.05, **p < 0.01 and ***p < 0.001 are from Spearman correlation coefficient test