Table 2.

Characteristics of tobacco addiction and consumption (in PY) for studied patients with diagnosed NSCLC

Tobacco addiction and consumption	n = 53	%
The smoking period
Smokers	50	94.3
Less than 25 years	9	17
More than 25 years, less than 39	21	39.6
More than 40 years	20	37.7
Non-smokers	3	5.7
Pack years (PY)
Up to 20 PY	7	14
20 to 29 PY	10	20
30 to 39 PY	11	22
More than 40 PY	22	44