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. Author manuscript; available in PMC: 2016 Aug 10.
Published in final edited form as: J Thorac Oncol. 2015 Dec 25;11(4):556–565. doi: 10.1016/j.jtho.2015.12.103

Figure 2.

Figure 2

Kaplan-Meier plots of overall survival according to the parameters of: the (A) exon of EGFR mutation (exon 19: n = 76; exon 21: n = 54; exon 18: n = 4), (B) presence of extrathoracic metastasis (yes: n = 79; no: n = 58), (C) presence of brain metastasis (yes: n = 30; no: n = 107), and (D) smoking status (never: n = 77; former: n = 55; current: n = 5). Median survival values are annotated in months. Hazard ratio (HR) according to the univariate analysis is as listed. For (A), HR is calculated for exon 19 vs either exon 18 or 21 EGFR mutation.