Clinical Study
Removal of Endobronchial Malignant Mass by Cryotherapy Improved Performance Status to Receive Chemotherapy
Figure 3
Proportion of patients who survived with and without performance status (PS) improvement after cryotherapy traced using the Kaplan-Meier method. Median, 406 versus 106 days; log-rank test, ; hazard ratio, 0.28; 95% confidence interval, 0.10–0.81.