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Table 2 Associations between urinary 3-PBA and BMI using piece-wise linear regression analysis

From: Association between urinary 3-phenoxybenzoic acid and body mass index in Korean adults: 1st Korean National Environmental Health Survey

 

Flexion point of Log-transformed urinary 3-PBA

Below flexion point

After flexion point

Beta-estimate (SE)

P value

Beta-estimate (SE)

P value

Model 1

1.4

0.5830 (0.0769)

< 0.0001

−0.2137 (0.1679)

0.20

Model 2

1.5

0.4038 (0.0786)

< 0.0001

−0.3609 (0.1792)

0.04

Model 3

1.4

0.4004 (0.0820)

< 0.0001

−0.3443 (0.1679)

0.04

  1. *Model 1 : Crude
  2. Model 2 : Sex, age adjusted
  3. Model 3 : Sex, age, region, current smoking status, current drinking status, regular exercise, education, use of mosquitocide, and job classification adjusted