Table 2.
Current smokers (n=12) |
Ex-smokers (n=25) |
Never smokers (n=64) |
P value | |
Pack years of smoking | 2.13 (0.59–3.48) | 2.13 (0.05–5.40) | 0.00 (0.00–0.00) | 0.467* |
Breath CO (ppm) | 9 (3.5–21) | 2 (2–3) | 1 (1–2) | <0.001 |
Urine cotinine (ng/mL) | 837 (22.42–1571.8) | 22.42 (22.42–22.42) | 22.42 (22.42–22.42) | <0.001 |
Values presented as median (IQR).
*Comparison between current and ex-smokers only.
CO, carbon monoxide.