Table 1. Patient demographics.

Characteristic	Number	%
Sex
Male	52	47
Female	58	53
Race
Chinese	102	93
Malay	5	5
Indian	3	3
Age when Iressa started (years)
Median (interquartile range)	55.8 (15.1)
Min, max	36.7, 92.1
Smoker
No	66	60.0
Yes	44	40.0
Histology
Adenocarcinoma	78	71
Squamous cell carcinoma	11	10
Large cell/undifferentiated	12	11
Bronchioloalveolar carcinoma	1	1
NSCLC, NOS	8	7
Performance status (ECOG)
0–1	79	72
2–4	31	28
No. of previous lines of chemotherapy
0	9	8
1	23	21
2 or more	78	71