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Table 2 Univariate analysis of predictive factors for OS of the surgical group (n = 11)

From: Surgical treatment in non-small cell lung cancer with pulmonary oligometastasis

Predictive factors Patients 5-year OS (%) Log-rank p value
Gender
 Male 6 16.7  
 Female 5 20.0 0.956
Age (years)
 >50 7 14.3  
 ≤50 4 25.0 0.176
Histological subtypes of primary tumor
 Adenocarcinoma 8 12.5  
 Non-adenocarcinoma 3 33.3 0.855
Oligometastatic site
 Ipsilateral lung 4 50.0  
 Contralateral lung 7 0.00 0.104
Oligometastatic mode
 Sync-oligometastasis 3 0.00  
 Oligo-recurrence 8 25.0 0.012
Number of oligometastatic nodules
 One 6 33.3  
 Two or Three 5 0.00 0.040
pN of primary tumor
 N0 4 50.0  
 N1 or N2 7 0.00 0.038
TNM stage of primary tumor
 I or II 7 28.6  
 III or IV 4 0.00 0.0004
  1. Italicized figures represent statistically significant difference