Clinical Study

Removal of Endobronchial Malignant Mass by Cryotherapy Improved Performance Status to Receive Chemotherapy

Figure 2

Proportion of patients who survived with and without chemotherapy traced using the Kaplan-Meier method. Median, 534 versus 106 days; log-rank test, ; hazard ratio, 0.25; 95% confidence interval, 0.10–0.69.