Distribution of cotinine concentrations measured in first saliva samples
| Number of subjects | ||||
|---|---|---|---|---|
| Hospitality workers | ||||
| Cotinine concentration (ng/g) | Smoking permitted | Smokefree workplace | Government employees | All workers in smokefree workplaces |
| *0.2 ng/g. | ||||
| †Two hospitality workers (cotinine concentrations 9.7 and 23 ng/g) and one government worker (15 ng/g) were excluded from the subsequent statistical analysis (see text for justification). | ||||
| Below detection limit* | 12 (35%) | 6 (60%) | 40 (78%) | 46 (75%) |
| 0.2 to <1 | 3 (9%) | 3 (30%) | 9 (18%) | 12 (20%) |
| 1 to <2 | 10 (29%) | 1 (10%) | 1 (2%) | 2 (3%) |
| 2 to <5 | 6 (18%) | 0 | 0 | 0 |
| ≥5† | 3 (9%) | 0 | 1 (2%) | 1 (2%) |
| All subjects | 34 (100%) | 10 (100%) | 51 (100%) | 61 (100%) |