Prognostic Nomogram and Therapeutic Option of Cancer-Specific Death in the Patients with Metachronous Second Primary Lung Cancer

Table 3

Sub-group competing risk analyses of histology and tumor size on cancer-specific death.

	Histology				Tumor size
	Small cell carcinoma		Non small lung carcinoma		≤2 cm		>2 cm
Chemotherapy
No vs yes	2.16 (0.94, 4.99)	0.070	0.92(0.70, 1.21)	0.568	0.79 (0.46, 1.26)	0.393	0.86 (0.63, 1.16)	0.317
Radiation/surgery
No	Ref		Ref		Ref		Ref
Surgery alone	0.28 (0.11, 0.76)	0.012	0.38 (0.28, 0.53)	<0.01	0.52 (0.31, 0.87)	0.013	0.33 (0.22, 0.48)	0.001
Radiation + surgery	0.85 (0.28, 2.55)	0.769	0.67 (0.47, 0.93)	0.019	0.59 (0.33, 1.07)	0.081	0.71 (0.49, 1.02)	0.065
Radiation alone	0.41 (0.18, 0.90)	0.026	0.66 (0.50, 0.88)	0.005	0.61 (0.36, 1.03)	0.064	0.63 (0.47, 0.86)	0.003