A: Kaplan-Meier survival of patients undergoing surgery versus SBRT. This is an unmatched comparison.
B: Kaplan-Meier survival of patients undergoing surgery versus SBRT: propensity score matched comparison.
C Kaplan-Meier survival of patients undergoing sublobar resection (wedge or segmentectomy) versus SBRT. This is an unmatched comparison.
D: Kaplan-Meier survival of patients undergoing sublobar resection (wedge or segmentectomy) versus SBRT: propensity score matched comparison.