Change in air nicotine concentrations in bars/restaurants before and after the implantation of a partial smoking legislation in Chile in 2007
| Venue | 2002 | 2008 | |||
| Policy | Air nicotine (μg/m3) | Policy | Air nicotine (μg/m3) | Percentage change | |
| 1 | Smoking | 3.68 | Smoking | 4.52 | +23% |
| 2 | Smoking | 6.85 | Mixed | 5.17 | −25% |
| 3 | Smoking | 3.23 | Mixed | 3.18 | −2% |
| 4 | Mixed | 8.35 | Mixed | 7.54 | −10% |
| 5 | Mixed | 1.58 | Smoke free | 0.06 | −97% |
| 6 | Mixed | 0.80 | Smoke free | 0.12 | −85% |
Air nicotine concentrations reflect the average of two air nicotine samplers in each venue.
Policy: smoking, allowed in all areas; mixed, smoking and non-smoking areas; smoke free, smoking not allowed in any area.