Successful Smoking Cessation in COPD: Association with Comorbidities and Mortality

Area of Science:

• Pulmonary Medicine
• Addiction Psychiatry
• Epidemiology

Background:

• Smoking cessation is critical for managing Chronic Obstructive Pulmonary Disease (COPD).
• Achieving sustained smoking cessation in COPD patients presents significant clinical challenges.
• Comorbidities can impact smoking cessation success and patient prognosis.

Purpose of the Study:

• To investigate the influence of comorbidities on smoking cessation rates in COPD patients.
• To identify risk factors associated with mortality in COPD patients who smoke.
• To analyze the relationship between alcohol abuse, psychiatric conditions, and smoking cessation outcomes.

Main Methods:

• A cohort study involving 739 COPD patients from two Finnish University Hospitals.
• Data collected from medical records and follow-up questionnaires over four years (0, 1, 2, and 4 years).
• Statistical analysis included logistic regression to determine odds ratios (OR) and 95% confidence intervals (CI) for cessation success and mortality.

Main Results:

• Overall smoking cessation rates were 60.2% for men and 55.6% for women.
• Alcohol abuse (OR 2.1) and psychiatric conditions (OR 1.8) were significantly associated with lower smoking cessation success.
• Non-quitters were younger but exhibited significantly higher mortality rates, even after adjusting for lung function and comorbidities.
• Alcohol abuse and psychiatric conditions were also linked to higher nicotine dependency among current smokers.

Conclusions:

• Co-existing alcohol abuse and psychiatric diseases substantially reduce smoking cessation success rates in COPD patients.
• These comorbidities are also significant independent predictors of increased mortality in COPD.
• Addressing addiction and mental health is crucial for improving outcomes in COPD smoking cessation programs.