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Ia期SCLC患者肺叶切除组、亚肺叶切除组及非手术组的生存曲线. A：OS曲线（Lob vs Sub, χ2=4.851, P=0.028; Sub vs non-surgical, χ2=6.529, P=0.011）；B：LCSS曲线（Lob vs Sub, χ2=2.694, P=0.101; Sub vs non-surgical, χ2=8.617, P=0.003）。
Kaplan-Meier survival curves between stage Ia SCLC patients with Lob, Sub and non-surgical cohort. A: OS curve (Lob vs Sub, χ2=4.851, P=0.028; Sub vs non-surgical, χ2=6.529, P=0.011); B: LCSS curve (Lob vs Sub, χ2=2.694, P=0.101; Sub vs non-surgical, χ2=8.617, P=0.003).
