BCO level (p.p.m.) | Self-reported non-smokers (n) | Self-reported smokers (n) in BCO range | Total (n) | |||
---|---|---|---|---|---|---|
 |  | 0-5 p.p.m. | 6-10 p.p.m. | 11-15 p.p.m. | >15 p.p.m. |  |
1 | 22 | Â | Â | Â | Â | 22 |
2 | 20 | 1 | Â | Â | Â | 21 |
3 | 11 | Â | Â | Â | Â | 11 |
4 | 3 | Â | Â | Â | Â | 3 |
5 | Â | 2 | Â | Â | Â | 2 |
6 | Â | Â | 7 | Â | Â | 7 |
≥7 | 4 |  | 42 | 66 | 131 | 243 |
Total | Â | Â | Â | Â | Â | 309 |