Table 1. Clinicopathological characteristics in subjects with lung cancer.

	Total (n = 399)	Resection (n = 145)	Biopsy (n = 220)	Cytology (n = 34)
Age (average)	61.7	60.2	62.7	61.7
Sex
Male	214	70	126	18
Female	185	75	94	16
Histology
Squamous cell carcinoma	47	15	32	0
Adenocarcinoma	341	127	188	26
Other types	11	3	0	8