Table 5.

Comparison of survival parameters between our study and surgical series

Surgical series	Study type	Parameter in surgical series	Parameter in present study
Medical Research Council (22)	Randomized	Mean OS 10.5 mo (RT arm) Mean OS 6 mo (surgery arm)	Median OS 18 mo
Lung Cancer Study Group 832 (23)	Randomized	Median OS 21–24 mo	Median OS 18 mo
Osaka, Japan (24)	Retrospective	cIA: 1-y OS 80%; 3-y OS 60% cIB: 1-y OS 60%; 3-y OS 45%	1-y OS 71% 3-y OS 35%
Johns Hopkins (25)	Retrospective	Receiving chemotherapy: 1-y OS 82%; 3-y OS 50%	Receiving chemotherapy: 1-y OS 80%; 3-y OS 45%
London, England (26)	Retrospective	1-y OS ∼70%; 3-y OS ∼55%	1-y OS 71%; 3-y OS 35%

Abbreviations: cIA, cIB = clinical stage IA, IB, respectively; OS = overall survival; RT = radiation therapy.