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

Table 1 Demographic characteristics of the study population

	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

ISSN: 1477-7819