A: Kaplan-Meier survival of patients undergoing combination chemotherapy and radiation (CR) versus chemotherapy, radiation, and surgery (CRS). This is an unmatched comparison.
B: Kaplan-Meier survival of patients undergoing combination chemotherapy and radiation (CR) versus chemotherapy, radiation, and surgery (CRS): propensity score matched comparison.
C: Kaplan-Meier survival of patients undergoing combination chemotherapy and radiation (CR) versus trimodality therapy (neoadjuvant chemoradiation followed by surgery): This is an unmatched comparison.
D: Kaplan-Meier survival of patients undergoing combination chemotherapy and radiation (CR) versus trimodality therapy (neoadjuvant chemoradiation followed by surgery): propensity score matched comparison.