Table 3

Main effects* of arsenic and covariates on logged urinary 8-OHdG (μg/l) (N = 290)


Urine
Drinking water
Toenail

Variable
β
95% CI
β
95% CI
β
95% CI

Arsenic quartile






     1st
reference

reference

reference

     2nd
0.16
(-0.15, 0.46)
0.02
(-0.30, 0.34)
-0.16
(-0.63, 0.304)
     3rd
0.22
(-0.12, 0.55)
0.22
(-0.11, 0.55)
-0.32
(-0.773, 0.13)
     4th
0.17
(-0.21, 0.56)
-0.16
(-0.55, 0.23)
-0.33
(-0.78, 0.12)
Logged creatinine
2.18
(1.96, 2.40)
2.23
(2.05, 2.42)
2.24
(2.06, 2.42)
BMI
-0.01
(-0.06, 0.03)
-0.01
(-0.05, 0.03)
-0.01
(-0.05, 0.03)
Age
0.01
(0.00, 0.03)
0.02
(0.00, 0.03)
0.01
(0.00, 0.02)
Chews betelnuts
-0.40
(-0.78, -0.03)
-0.46
(-0.84, -0.09)
-0.41
(-0.78, -0.04)
ETSin the home
-0.47
(-0.79, -0.16)
-0.36
(-0.69,-0.03)
-0.43
(-0.75, -0.10)
Education††
-0.72
(-1.10, -0.34)
-0.70
(-1.08, -0.32)
-0.72
(-1.11, -0.33)
GSTM1
-0.02
(-0.37, 0.33)
0.06
(-0.30, 0.41)
-0.01
(-0.36, 0.34)
hOGG1
-0.03
(-0.34, 0.28)
-0.01
(-0.32, 0.29)
-0.06
(-0.37, 0.24)
APE1
-0.28
(-0.60, 0.04)
-0.28
(-0.59, 0.03)
-0.40
(-0.73, -0.07)

*Main effects are from three random effects Tobit models.

ETS is environmental tobacco smoke.

††Education compared secondary or higher to primary or less

Breton et al. Environmental Health 2007 6:39   doi:10.1186/1476-069X-6-39