Table 2.
Smoking restrictions and urinary biomarker levels of non-smoker at working place
| Smoking restriction | No smoking inside the building |
Designated smoking room |
No restriction | |
|---|---|---|---|---|
| Number of participants | 244 | 193 | 21 | |
| TNE (ng/mg creatinine) |
Median | 1.00 | 1.10 | 2.20** |
| Quartile§ | (0.68–1.70) | (0.65–1.70) | (0.98–8.90) | |
| Ratio | 1 | 1.10 | 2.20 | |
| NNAL (pg/mg creatinine) |
Median | 2.10 | 1.90 | 2.80** |
| Quartile | (1.10–3.70) | (0.91–3.00) | (2.10–7.60) | |
| Ratio | 1 | 0.90 | 1.33 | |
| m7Gua (μg/mg creatinine) |
Median | 9.00 | 8.90 | 10.0 |
| Quartile | (6.90–12.0) | (6.90–11.0) | (6.70–12.0) | |
| Ratio | 1 | 0.99 | 1.11 | |
| 8-OHdG (ng/mg creatinine) |
Median | 4.00 | 3.90 | 4.40 |
| Quartile | (2.70–5.40) | (3.00–5.10) | (3.40–5.70) | |
| Ratio | 1 | 0.98 | 1.10 | |
**p<0.01 vs no SHS exposure group. §(25% quartile–75% quartile)