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. 2026 Jan 12;21:554995. doi: 10.2147/COPD.S554995

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© 2026 Tong et al.

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Clinical Impact Curve of the Sustained Smoking Cessation Prediction Model in COPD Patients. The CIC illustrates the relationship between the number of patients predicted to be at high risk and the number of patients who actually experienced the event (smoking cessation failure). The solid blue line represents the total number of patients predicted to be at high risk for smoking cessation failure across different high-risk thresholds. The dashed purple line represents the number of patients who actually experienced the event at the same high-risk thresholds. The x-axis represents the high-risk threshold, and the y-axis represents the number of high-risk patients (per 1000 patients). This graph is used to evaluate the clinical utility of the prediction model and its ability to identify high-risk populations.