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Table 1 Clinical characteristics of cases with uncommon and common metastasis

From: Distribution and prognosis of uncommon metastases from non-small cell lung cancer

  Uncommon metastases Common metastases P
n % n %
Age (years)    0.36
 Median (range) 58 (20–85) 59 (17–89)
Gender      0.02
 Male 137 71.0 1673 62.4  
 Female 56 29.0 1006 37.6  
Smoking status      0.08
 Smoker 99 51.3 1197 44.7
 Never smoker 94 48.7 1482 55.3
ECOG PS      0.96
 <2 175 90.7 2423 90.4
 =2 12 6.2 178 6.6
 >2 6 3.1 78 2.9
Diagnosis time      <0.01
 At disease course 82 43.0 415 15.5
 At intial 111 57.0 2264 84.5
Histology      0.41
 Adenocarcinoma 151 78.2 2178 81.3
 Squamous carcinoma 26 13.5 339 12.7
 Othersa 16 9.0 162 6.0
Treatment      
 >2 lines 35 18.1 410 15.3 0.49
 ≤2 lines 122 63.2 1795 67.0  
 BSC 36 18.7 474 17.7  
TKIs or not      0.06
 Yes 56 29.0 959 35.8  
 No 137 71.0 1720 64.2  
  1. Abbreviations: ECOG PS Eastern Cooperative Oncology Group performance status
  2. aOther types of histology except adenocarcinomas and squamous carcinoma