chemoradiotherapy were 0.69 (0.56–0.85) ( P < 0.001), 0.48 (0.41–0.56) ( P < 0.001), 0.63 (0.39–1.03) ( P = 0.068), and 0.76 (0.61–0.94) ( P = 0.010), respectively, showing significant OS benefit for sublobectomy/lobectomy and an almost significant OS benefit for pneumonectomy.
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