Table 2. Summary of EGFR TKI treatment outcome.

Characteristic	N	%
Number of previous treatment
0	101	74.3
1	32	23.5
2	3	2.2
Best response
Complete response	0	0
Partial response	87	63.8
Stable disease	33	24.5
Progressive disease	6	4.4
Not assessable	10	7.3
EGFR TKI
Gefitinib	136	100
Erlotinib	0	0