Table 5 Change in lung function during a workshift before and after implementation of smoking ban (n = 69).
| Parameter | Before smoking ban | After smoking ban, mean (SD) | p Value comparing changes | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Pre‐shift, mean (SD) | Post‐shift, mean (SD) | Change, mean (SD) | Change (%) | Pre‐shift, mean (SD) | Post‐shift, mean (SD) | Change, mean (SD) | Change (%) | ||
| FVC | 4.63 l (0.99) | 4.55 l (1) | −81 ml (136) | −1.8 | 4.49 l (0.93) | 4.44 l (0.95) | −52 ml (156) | −1.2 | 0.24 |
| FEV1 | 3.73 l (0.80) | 3.64 l (0.8) | −89 ml (132) | −2.4 | 3.52 l (0.71) | 3.48 l (0.73) | −46 ml (152) | −1.4 | 0.09 |
| FEF25–75% | 3.74 l/s (1.35) | 3.54 l/s (1.33) | −199 ml/s (372) | −5 | 3.33 l/s (1) | 3.26 l/s (1) | −64 ml/s (307) | −1.7 | 0.01 |
| PEF | 564 l/min (147) | 577 l/m (154) | 14 l/min (87) | 3.9 | 576 l/min (152) | 584 l/min (150) | 9 l/min (63) | 2.5 | 0.11 |
*Cross shift changes significantly changed from before application of smoking ban p<0.05 (Student's paired t test).