Table 1.

Surgically Resected Non-Small Cell Lung Cancer Patients Characteristics.

Items	Evaluable Patients (n = 23)
	No.	%
Age (years)
Median	61.7
Range	43–78
Sex
Male	8	34.8
Female	15	65.2
Pathological type
Squamous carcinoma	12	52.2
Adenocarcinoma	11	47.8
Pathological stage
I	8	34.8
II	7	30.4
IIIA	8	34.8
Lymph-node metastasis‡
Positive	6	26.1
Negative	17	73.9
Smoking index§
≥400	13	56.5
<400	10	43.5
Tumor free survival(months)
Mean	42.0
Range	1–60*
Overall survival(months)
Mean	43.6
Range	5–60*

^‡Cancer patients were pathologically confirmed and divided into lymph node metastasis positive (N1–N3), or negative (N0), respectively.

^§Smoking index = daily cigarette number × year of smoking; Smoking index ≥400 is a high-risk factor of lung cancer.

^*The last follow-up of tumor free survival or overall survival was 60 months.