Zonguldak Karaelmas University, Faculty of Medicine, 67600 Kozlu, Zonguldak, Turkey (e-
mail: remal1@ yahoo. com) found to be 39.1%, 44.2% and 16.7% respectively. Ex-smokers
had the highest prevalence of large and small airway obstruction on spirometry. Smoking
prevalence is high in coal workers living in Zonguldak city of Turkey. Most of the smokers
know that smoking is dangerous and want to quit smoking. A detailed smoking history during …