From: Exhaled carbon monoxide: a non-invasive biomarker of short-term exposure to outdoor air pollution
Variables | Mean | Standard deviation | p |
---|---|---|---|
Baseline exhCO (ppm) | 13.4 | 7.6 | |
exhCO at the end of the working day (ppm) | 18.5 | 9.5 | 0.004 |
2 last hours ambCOa | 5.6 | 4.4 | |
4 last hours ambCOa | 5.7 | 4.5 | 0.01 |
6 last hours ambCOa | 6.3 | 4.7 | |
ambCO | 6.6 | 3.8 |