Urinary cotinine values in employees of public establishments, before and after the smoking ban
| Men | Women | Total | |
|---|---|---|---|
| Pre-law | |||
| No of subjects | 29 | 8 | 37 |
| Mean (ng/ml) | 17.8 | 17.9 | 17.8 |
| 95% CI | 13 to 22.5 | 12.2 to 23.6 | 14 to 21.6 |
| SD (ng/ml) | 12.5 | 7.4 | 11.4 |
| Median (ng/ml) | 13.2 | 15.2 | 14.2 |
| Geometric mean (ng/ml) | 15 | 16.7 | 15.4 |
| 95% CI | 12.3 to 18.5 | 11.7 to 23.6 | 13 to 18.3 |
| Post-law I | |||
| No of subjects | 15 | 8 | 23 |
| Mean (ng/ml) | 6.4 | 3.9 | 5.5 |
| 95% CI | 4 to 8.8 | 2 to 5.7 | 3.8 to 7.2 |
| SD (ng/ml) | 4.3 | 2.2 | 3.9 |
| Median (ng/ml) | 6.0 | 4.0 | 5.1 |
| Geometric mean (ng/ml) | 5.2 | 3.2 | 4.4 |
| 95% CI | 3.5 to 7.7 | 1.7 to 6 | 3.1 to 6.0 |
| Mann-Whitney test | p<0.0005 | p<0.003 | p<0.0001 |
| Post-law II | |||
| No of subjects | 5 | 6 | 11 |
| Mean (ng/ml) | 3.0 | 4.3 | 3.7 |
| 95% CI | 0.53 to 6.6 | 1.2 to 7.4 | 1.8 to 5.6 |
| SD (ng/ml) | 2.9 | 2.9 | 2.8 |
| Median (ng/ml) | 1.0 | 4.5 | 4.0 |
| Geometric mean (ng/ml) | 2.0 | 3.2 | 2.6 |
| 95% CI | 0.59 to 7 | 1.2 to 8.7 | 1.4 to 4.9 |
| Mann-Whitney test | p<0.0001 | p<0.001 | p<0.0001 |