Skip to main content

Table 3 Model parameter estimates of relative urinary arsenic levels and methylation indicesa

From: Biological and behavioral factors modify urinary arsenic metabolic profiles in a U.S. population

Parameter

Arsenical

Methylation index

Logit (%TiAs)

Logit (%MMA)

Logit (%DMA)

Log10 (PMI)

Log10 (SMI)

Intercept

Untreated tap

0.969 (0.689)

0.178 (0.496)

−1.867** (0.459)

−0.311 (0.348)

−0.387 (0.214)

 

Filtered

1.136 (0.711)

0.369 (0.509)

−2.114** (0.479)

−0.295 (0.353)

−0.492* (0.221)

 

Other treatment

1.047 (0.676)

0.239 (0.489)

−1.962** (0.458)

−0.315 (0.339)

−0.424* (0.213)

 

Bottled

1.138 (0.700)

0.113 (0.500)

−1.965** (0.459)

−0.387 (0.355)

−0.380 (0.215)

Transformed Water TAs Slope

Untreated tap

0.012 (0.063)

0.062 (0.042)

−0.053 (0.041)

0.020 (0.031)

−0.031 (0.018)

 

Filtered

−0.033 (0.128)

−0.049 (0.087)

0.065 (0.085)

−0.009 (0.061)

0.028 (0.038)

 

Other treatment

0.045 (0.073)

0.024 (0.055)

−0.047 (0.053)

−0.006 (0.035)

−0.015 (0.024)

 

Bottled

−0.063 (0.073)

0.070 (0.052)

0.011 (0.053)

0.046 (0.034)

−0.023 (0.023)

Log10 (Water TAs offset)

     

Log10 (Tap water consumption)

−0.079 (0.055)

0.023 (0.039)

0.039 (0.038)

0.037 (0.027)

−0.003 (0.017)

Log10 (Creatinine)

−0.341** (0.078)

0.019 (0.054)

0.193*** (0.051)

0.133* (0.039)

0.018 (0.023)

Gender (Female = 1, Male = 0)

−0.195** (0.046)

−0.226** (0.031)

0.257** (0.029)

−0.012 (0.022)

0.117** (0.013)

Log10 (BMI)

0.055 (0.270)

−1.257** (0.183)

0.736** (0.173)

−0.478*** (0.133)

0.554** (0.079)

Log10 (Age)

−1.277** (0.272)

−0.040 (0.189)

0.719*** (0.188)

0.461*** (0.131)

0.110 (0.084)

Log10 (Cotinine)

0.067*** (0.019)

0.007 (0.014)

−0.046*** (0.014)

−0.023* (0.009)

−0.008 (0.006)

Fish or shellfish consumption within 48 h

−0.011 (0.047)

−0.061 (0.032)

0.040 (0.032)

−0.019 (0.023)

0.028 (0.014)

  1. aParameter estimates with standard errors in parentheses. Significance levels for estimates: P < 0.0001-***; 0.0001 < P < 0.001-**; 0.05 > P > 0.001-*