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Table 1 General characteristics of the study subjects based on water arsenic

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

Characteristics All Subjects Low
(< 129 μg/L)
Medium
(130 - 264 μg/L)
High
(> 265 μg/L)
No. of subject 141 44 50 47
Sex
[no. (male/female)]
89/52 32/12 32/18 25/22
Age
[years (Mean ± SD)]
37.66 ± 12.51 39.34 ± 13.71 35.22 ± 10.93 38.43 ± 12.90
Water arsenic concentration
[μg/L (Mean ± SD)]
224.92 ± 57.20 32.13 ± 43.55 215.82 ± 36.96 426.80 ± 91.10
Water consumption (L/day) 2.30 ± 1.09 1.71 ± 1.01 2.54 ± 1.13 2.65 ± 1.15
Years of arsenic exposure (Mean ± SD) 14.10 ± 3.27 16.00 ± 3.10 13.20 ± 3.20 13.10 ± 3.50
Occupation     
Female 90.70 87.34 90.21 94.54
   Housewives (%) 9.30 12.66 9.79 5.46
   Others (%) [Farmworkers, tailors etc.]     
Male     
   Farmers (%) 85.54 85.26 87.45 83.91
   Others (%) [Venders, rickshaw pullers etc.] 14.46 14.74 12.55 16.09
(+) symptomps [% (Melanosis and hyperkeratosis)] 69.52 61.37 60 87.2
(-) symptomps (%) 30.48 38.63 40 12.8
BMI* 20.44 ± 3.22 20.89 ± 3.24 20.32 ± 3.08 20.11 ± 3.35
  1. BMI* was calculated as body weight (kg) divided by square body height (m2)
  2. Frequency test is used to divide the study subjects into three groups of equal proportion based on water arsenic concentration