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Table 4 Multivariate analysis of the risk factors affecting the survival of unsuspected small cell lung cancer after surgery

From: Long-term results of postoperative unsuspected small cell lung cancer on real-world data

Factors

HR

95%CI

P-value

Type of operation

Sublobectomy

1

  

Lobectomy and pneumonectomy

O.73

0.30–1.75

0.485

N staging

   

N0

1

  

N1 and N2

1.42

0.97–2.81

0.042

Number of lymph nodes dissected

   

≧15

1

  

 < 15

0.93

0.49–1.70

0.791