<![CDATA[Chronic Obstructive Pulmonary Disease (COPD) is one of the chronic diseases with an increasing prevalence and is a major cause of morbidity and mortality worldwide. Smoking is the main risk factor for COPD and affects the severity of the disease. Objective: This study aimed to determine the relationship between smoking behavior and the severity of COPD at the Polyclinic of Rumah Sakit Islam Jakarta Cempaka Putih. Methods: This study used a correlational analytic design with a cross-sectional approach. The sample was obtained using the Simple Random Sampling technique, consisting of 40 respondents selected based on inclusion and exclusion criteria. Smoking behavior data were collected using the Brinkman Index questionnaire, while COPD severity was obtained from spirometry results based on the GOLD classification. Relationship analysis was performed using the Spearman Rank statistical test. Results: The Spearman Rank test showed a p-value = 0.001 (p < 0.05), indicating that there is a relationship between smoking behavior and COPD severity. The correlation coefficient value was r = 0.561, indicating a positive relationship with a strong correlation between smoking behavior and COPD severity. Conclusion: This study states that smoking behavior is associated with the severity of COPD at the Polyclinic of Rumah Sakit Islam Jakarta Cempaka Putih, as indicated by a significant positive relationship. The greater the exposure to cigarettes, the more severe the degree of COPD. Therefore, it is very important for patients to stop smoking habits in order to maintain lung health and their quality of life.]]>
