Table 2 Characteristics of active and passive smoking exposures, by smoking status, at first visit (N = 66)
From: Occupational exposures, smoking and airway inflammation in refractory asthma
| Â | Never smoked | Ex-smoker | P | ||
|---|---|---|---|---|---|
N = 47 | N = 19 | ||||
| Â | Â | Â | Median | IQR | Â |
Smoking (pack-years) |  |  | 1.70 | 0.5 – 5.00 |  |
Passive smoking at home | Â | Â | Â | Â | Â |
Lives with one or more smokers | 4 | 9% | 5 | 26% | 0.108 |
Smoking not allowed in home | 12 | 23% | 1 | 5% | 0.156 |
Smoking allowed inside | 2 | 4% | 5 | 26% | 0.018 |
Smoking allowed outside | 34 | 72% | 13 | 68% | 0.770 |
Passive smoking elsewhere | Â | Â | Â | Â | Â |
No time with smokers | 18 | 38% | 4 | 21% | 0.252 |
Spends time indoors smokers | 6 | 13% | 3 | 16% | 0.709 |
Spends time outdoors smokers | 22 | 47% | 12 | 63% | 0.283 |
| Â | Median | IQR | Median | IQR | Â |
Smoking biomarkers | Â | Â | Â | Â | Â |
eCO (ppm) | 2 | 1 - 3 | 2 | 1 – 3 | 0.751 |
NicAlert™ | 1 | 1 - 1 | 1 | 0 – 2 | 0.441 |