Table 1. Characteristics of patients and immunohistochemical stainings.

			Staining intensity				Extent of staining
	No. of patients	Survival (days)	1	2	3	4	1	2	3
Gender
Male	59	433	18 (30%)	27 (46%)	13 (22%)	1 (2%)	2 (3%)	16 (27%)	41 (69%)
Female	26	731	10 (42%)	12 (50%)	1 (4%)	1 (4%)	1 (4%)	7 (27%)	18 (69%)
Histology
Squamous cell	59	556	17 (30%)	25 (44%)	13 (23%)	2 (4%)	1 (2%)	14 (24%)	44 (75%)
Adenocarcinoma	25	452	10 (40%)	14 (56%)	1 (4%)	0 (−)	2 (8%)	8 (32%)	15 (60%)
Other	1	—	—	—	—	—	—	—	—
Stage
Localised	27	251	11 (41%)	10 (37%)	6 (22%)	0 (0%)	1 (4%)	8 (30%)	18 (66%)
Advanced	58	651	17 (30%)	29 (52%)	8 (14%)	2 (4%)	2 (3%)	15 (26%)	41 (71%)
Localisation of tumour
Upper	9	686	5 (63%)	2 (25%)	1 (13%)	0 (0%)	1 (11%)	4 (44%)	4 (44%)
Middle	26	594	9 (36%)	15 (60%)	1 (4%)	0 (0%)	1 (4%)	6 (23%)	19 (73%)
Lower	42	372	11 (26%)	19 (45%)	10 (24%)	2 (5%)	1 (2%)	11 (26%)	30 (71%)