Table 2. Patient characteristics (n=28).

Characteristics	Number	Ratio (%)
Age (year)
Median	54
Range	27–75
Gender
Male	15	54
Female	13	46
ECOG performance status
0–1	22	79
2	6	21
Disease stage
IIIB	10	36
IV	18	64
Histology
Adenocarcinoma	21	75
Squamous carcinoma	4	14
Large cell carcinoma	1	4
Other	2	7