Airborne nicotine concentrations in public places, China 2005
| Samples (n) | Samples with nicotine detected* (%) | Median (IQR) nicotine concentration (μg/m3) | |
|---|---|---|---|
| IQR, interquartile range. | |||
| *Nicotine concentration above the limit of detection. | |||
| Province | |||
| Beijing | 44 | 100.0 | 3.01 (0.47–7.35) |
| Sichuan | |||
| Chengdu City | 38 | 84.2 | 0.11 (0.01–0.36) |
| Mianzhu County | 37 | 97.3 | 0.57 (0.10–1.77) |
| Jiangxi | |||
| Nanchang City | 40 | 77.5 | 0.32 (0.02–1.99) |
| Anyi County | 36 | 94.4 | 1.04 (0.13–2.90) |
| Henan | |||
| Zhengzhou City | 39 | 92.3 | 0.56 (0.14–1.75) |
| Xin’an County | 36 | 94.4 | 0.48 (0.11–2.26) |
| Urbanisation | |||
| Beijing | 44 | 100.0 | 3.01 (0.47–7.35) |
| Other city | 117 | 84.6 | 0.27 (0.03–1.07) |
| County | 109 | 95.4 | 0.52 (0.10–2.28) |
| Public places | |||
| Hospital | 70 | 91.4 | 0.17 (0.05–1.73) |
| School | 70 | 78.6 | 0.10 (0.02–0.45) |
| Government | 42 | 97.7 | 0.48 (0.21–1.23) |
| Transportation | 12 | 91.7 | 0.68 (0.06–1.81) |
| Restaurant | 54 | 100.0 | 2.17 (1.02–4.63) |
| Entertainment | 22 | 100.0 | 7.48 (5.64–12.05) |
| Written regulation | |||
| Yes | 93 | 85.0 | 0.11 (0.03–0.72) |
| No | 177 | 94.9 | 1.00 (0.19–3.27) |
| Overall | 270 | 91.5 | 0.49 (0.07–2.28) |