Self reported environmental tobacco smoke (ETS) exposure and the laboratory indices (mean (SD))
| n | ETS(+) | n | ETS(−) | F value | |
|---|---|---|---|---|---|
| The statistical test was performed after logarithmic conversion of the data. | |||||
| **p<0.01; ***p<0.001. | |||||
| Urinary CCR (ng/mg) | 47 | 18.4 (15.1) | 47 | 19.5 (15.3) | 0.14 |
| Salivary cotinine (ng/ml) | 50 | 2.25 (4.1) | 44 | 1.54 (3.54) | 0.80 |
| Room nicotine (μg/m3) | 48 | 0.14 (0.18) | 43 | 0.02 (0.10) | 14.9 *** |
| Personal nicotine (μg/m3) | 47 | 0.18 (0.38) | 44 | 0.02 (0.10) | 6.96 ** |