Table 1. Patient characteristics.

	A	B	Total	C	D	Total
No. of eligible patients	87	85	172	48	47	95
Sex
Male	49	49	98	35	35	70
Female	38	36	74	13	12	25
Age
(Ave.)	60.9	60.2	60.6	59.3	60.5	59.9
PS
0	66	66	132	36	35	71
1	19	19	38	12	10	22
2	2	0	2	0	2	2
pT
1	41	45	86	12	13	25
2	46	40	86	24	24	48
3				12	10	22
pN
0				6	1	7
1				18	19	37
2				24	27	51
Stage
I	87	85	172
II				16	17	33
IIIA				32	30	62
Histology
Adenocarcinoma	67	68	135	29	27	56
Squamous cell carcinoma	17	15	32	17	17	34
Large cell carcinoma	3	2	5	2	3	5
DNA pattern
Diploidy	18	17	35	10	8	18
Aneuploidy	69	68	137	38	39	77

Abbreviations: PS, performance status; pT, pathological tumour stage; pN, pathological lymph node stage.