Table 4.
Multiple regression analysis of inorganic arsenic metabolites by work group
| Estimate | Standard error | P-value | R 2 | ||
|---|---|---|---|---|---|
|
As
3+
* |
Ion implantation |
0.53 |
0.21 |
0.02 |
|
| |
Clean |
0.66 |
0.23 |
0.01 |
|
| |
Office |
reference |
|
|
0.31 |
|
As
5+
* |
Ion implantation |
0.90 |
0.32 |
0.01 |
|
| |
Clean |
1.38 |
0.36 |
<0.01 |
|
| |
Office |
reference |
|
|
0.40 |
|
MMA* |
Ion implantation |
0.30 |
0.19 |
0.12 |
|
| |
Clean |
0.56 |
0.21 |
0.01 |
|
| |
Office |
reference |
|
|
0.24 |
|
DMA* |
Ion implantation |
0.03 |
0.27 |
0.92 |
|
| |
Clean |
0.60 |
0.31 |
0.06 |
|
| |
Office |
reference |
|
|
0.16 |
|
As
3+
+ As
5+*
|
Ion implantation |
0.61 |
0.20 |
0.01 |
|
| |
Clean |
0.82 |
0.23 |
<0.01 |
|
| |
Office |
reference |
|
|
0.37 |
|
As
3+
+ As
5+
+MMA* |
Ion implantation |
0.40 |
0.18 |
0.03 |
|
| |
Clean |
0.64 |
0.20 |
<0.01 |
|
| |
Office |
reference |
|
|
0.31 |
|
As
3+
+ As
5+
+MMA + DMA* |
Ion implantation |
0.08 |
0.25 |
0.75 |
|
|
Clean |
0.60 |
0.28 |
0.04 |
|
|
| Office | reference | 0.18 |
As3+: trivalent arsenic, As5+: pentavalent arsenic, GM, Geometric mean; GSD, Geometric standard deviation; MMA, Monomethylarsonic acid; DMA, Dimethylarsinic acid, Total: sum of inorganic arsenic metabolites (As3++ As5++MMA + DMA), * adjusted for smoking status, seafood intake.