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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

From: Association between arsenic exposure and plasma cholinesterase activity: a population based study in Bangladesh

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  
  1. p-values are from Independent Samples T-Test