Table 1.

Demographic Data of Non-Smokers, Ex-Smokers and Current Smokers

Parameters	Non-Smokers (n=210)	Ex-Smokers (n=68)	Current Smokers (n=69)
Age, years, median (range)	53.0 (24–77)	54.0 (36–77)	51.0 (38–73)
Male/Female	62/148	68/0	69/0
Smoking history
Packs smoked per day, median (range)		1.0 (0.5–3.0)	1.0 (0.2–2.5)
Smoking duration,years, median (range)		17.5 (3.0–45.0)	25.0 (2–45)
Pack years, years, median (range)		15.0 (3.0–60.0)	25.0 (0.4–60)
Duration of smoking cessation, years, median (range)		10.0 (0.5–40.0)