Table 4. Survival analysis of different metastatic organs and treatment modalities.

Parameter	Non-surgery (months), median (95% CI)	Surgery (months), median (95% CI)	Log Rank	P value
Only lung metastasis	5.00 (4.90–5.11)	15.00 (14.56–15.44)	3,834.12	<0.001
Lung + liver metastasis	2.00 (1.91–2.09)	10.00 (9.46–10.55)	1,548.96	<0.001
Lung + bone metastasis	4.00 (3.86–4.14)	10.00 (9.26–10.74)	442.61	<0.001
Lung + brain metastasis	3.00 (2.82–3.18)	8.00 (6.98–9.02)	125.80	<0.001
Chemotherapy
Yes	9.00 (8.87–9.13)	24.00 (23.29–24.71)	7,849.03	<0.001
No	1.00 (0.97–1.03)	9.00 (8.37–9.63)
Radiotherapy
Yes	6.00 (5.87–6.13)	20.00 (18.71–21.29)	8,923.70	<0.001
No	3.00 (2.94–3.06)	18.00 (17.39–18.61)

CI, confidence interval.