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Table 4 Effects of age, sex, water arsenic and BMI on PChE activity

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

Parameters SS df Mean Square F
Age 2011860.248 2 1005930.124 0.079
Sex 6020517.227 1 6020517.227 0.471
Water arsenic 335859312.541 2 167929656.270 13.13*
BMI 41162709.416 2 20581354.708 1.609
Total 32276437312    
  1. Effects are from four-way classification (main effect model). *p < 0.001