The cause-specific survival (CSS) and overall survival (OS) differences between different N classification or R classification patients with and without postoperative radiotherapy (Rx).
†<p>For Log-rank χ<sup>2</sup> test, postoperative radiotherapy (Rx) was defined as factor, the individual R, N and N+R classification were defined as Stratum.</p
Medicine, Cancer, cause-specific, differences, classification, patients, postoperative, radiotherapy
DOI identifier: 10.1371/journal.pone.0056613.t006
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