Median nicotine concentration (μg/m3) in hospitality venues at baseline and at 6, 12 and 24 months after the Spanish smoking law (January 2006) (samples repeated at the four measurements)
| Baseline median nicotine concentration (IQR) | 6-Month follow-up median nicotine concentration (IQR) | 12-Month follow-up median nicotine concentration (IQR) | 24-Month follow-up median nicotine concentration (IQR) | |
| Bars/restaurants | ||||
| Smoking banned* | 2.95 (2.23–4.07) | 0.24 (0.01–0.55) | 0.12 (0.01–0.25) | 0.11 (0.06–0.40) |
| Smoking allowed* | 7.07 (2.00–11.78) | 4.34 (1.74–10.58) | 6.22 (2.77–12.16) | 10.12 (3.77–18.00) |
| Smoking permitted in designated areas*: | ||||
| Smoking area | 4.14 (1.96–13.60) | 3.20 (2.28–10.78) | 10.22 (7.23–17.37) | 7.80 (3.04–8.60) |
| Non-smoking area | 4.14 (1.96–13.60) | 2.28 (0.53–3.20) | 0.70 (0.47–1.52) | 1.17 (0.78–2.79) |
| Discotheques/pubs | ||||
| Smoking allowed* | 33.31 (8.37–47.19) | 23.50 (12.48–60.45) | 18.29 (3.21–61.07) | 27.76 (12.76–45.49) |
↵* Smoking regulation after the law. At baseline, smoking was permitted in all venues.