Table 3 PChE activity in the groups based on the skin symptoms and on the regulatory upper limit of arsenic concentration (50 μg/L) in drinking water
Parameters | Categories | n | PChE activity (U/L) × 104 (Mean ± SD) | p-value |
|---|---|---|---|---|
Skin symptoms | (-) Symptoms | 43 | 1.693 ± 0.394 | 0.000 |
|  | (+) Symptoms | 98 | 1.359 ± 0.349 |  |
Arsenic in drinking water | ≤ 50 μg/L | 33 | 1.775 ± 0.371 | 0.000 |
|  | > 50 μg/L | 108 | 1.365 ± 0.349 |  |