|
Weekend change in PCE in exhaled breath and creatinine-adjusted TCA in urine |
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| Parameter |
Weekend |
Post-shift Friday |
Pre-shift Monday |
Percent Changea |
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|
|
|
|
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| n |
GM (Range) |
n |
GM (Range) |
n |
Median |
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|
|
|
|
|
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| PCE in exhaled breath (ppm) |
1 |
12 |
1.48 (0.43 – 3.83) |
13 |
0.66 (0.08 – 1.55) |
12 |
-46% |
| 2 |
13 |
1.05 (0.22 – 4.42) |
12 |
0.54 (0.17 – 0.97) |
12 |
-53% |
|
| 3 |
13 |
1.83 (0.87 – 5.80) |
11 |
0.34 (0.08 – 1.91) |
11 |
-80% |
|
| Overall |
38 |
1.42 (0.22 – 5.80) |
36 |
0.50 (0.08 – 1.91) |
35 |
-58% |
|
| TCA in urine/creatinine (mg/g) |
1 |
10 |
0.44 (0.03 – 2.24) |
10 |
0.47 (0.05 – 6.24) |
8 |
-25% |
| 2 |
11 |
0.72 (0.31 – 4.61) |
11 |
0.51 (0.19 – 2.83) |
10 |
-3% |
|
| 3 |
9 |
0.77 (0.31 – 1.64) |
10 |
0.35 (0.02 – 0.90) |
7 |
-38% |
|
| Overall |
30 |
0.62 (0.03 – 4.61) |
31 |
0.44 (0.02 – 6.24) |
25 |
-29% |
|
|
Abbreviations: n, number of samples; GM, geometric mean a Percent change from post-shift Friday to pre-shift Monday is defined as 100% × (Monday – Friday)/Friday | |||||||
McKernan et al. Environmental Health 2008 7:12 doi:10.1186/1476-069X-7-12 |
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