From: The importance of early COPD diagnosis during a smoking cessation program
COPD stages
Ι
ΙΙ
ΙΙΙ
IV
n
39
35
11
1
First diagnosis
33
9
0
Abstinence rates after 3 months *
30 (76.9%)
30 (85.79%)
7 (63.6%)
1 (100%)