Table 1.

Distribution between clinical and surgical stages in the study population

Clinical stages	Surgical stages					No data (no surgery)	Total
	0,I	II	IIIa	IIIb	IV
0,I	280	56	28	0	4	187	555
II	39	98	33	1	5	153	329
IIIa	8	16	33	1	0	374	431
IIIb	0	1	0	1	0	371	373
IV	3	2	1	0	13	1489	1508
Total	330	173	95	3	22	2573	3196