Successful Smoking Cessation in COPD: Association with Comorbidities and Mortality

Table 2

Independent risk factors for failure in smoking cessation by multivariate logistic regression analysis.

Variables	Adjusted OR	95% CI
Female gender	1.08	0.75–1.55
Aging by one year	0.96	0.93–0.99**
FEV1 % of predicted
>80	1.00
65–80	0.84	0.48–1.46
40–64	0.60	0.35–1.02
<40	0.59	0.32–1.09
Number of pack years increased by one	0.99	0.99–1.00
Alcohol abuse	2.12	1.35–3.34**
Psychiatric disorder	1.83	1.23–2.71 **
Cardiovascular diseases	0.78	0.53–1.15
Diabetes	1.07	0.68–1.68
Cancer	0.85	0.49–1.47

Response (nonquitter = 1, quitter = 0) ∗∗P ≤ 0.01 ∗P ≤ 0.05.