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Table 1 Demographic characteristics of the study population

From: Correlation of survival and EGFR mutation with predominant histologic subtype according to the new lung adenocarcinoma classification in stage IB patients

  Number of patients
Gender  
 Male 79
 Female 57
Age (years)  
 Range 34-79
 Median 57.6
 <65 95
 ≥65 41
Smoking status  
 Never 103
 Former or current 33
Tumor size  
 ≥3 cm 89
 <3 cm 47
Adjuvant chemotherapy  
 Yes 37
 No 99
Grade  
 Well 57
 Moderate or poor 79
Surgical procedure  
 Lobectomy 119
 Bilobectomy 17
Pleural involvement  
 Yes 69
 No 67
Lymphatic and/or vessel invasion  
 Yes 12
 No 124
Histological subtypes (IASLC/ATS/ERS)  
 Invasive adenocarcinoma
 Lepidicpredominant 21
 Acinarpredominant 39
 Papillarypredominant 38
 Micropapillarypredominant 22
 Solid-predominant 14
 Variants of invasive adenocarcinoma 2