Table 2.

Serum concentrations of proteins tested in relation to clinicopathological parameters of oesophageal cancer (OC)

Group tested	CXCL-8 (pg/ml)	CRP (mg/l)	CEA (ng/ml)	SCC-Ag (ng/ml)
TNM stage (1 + 2)
Median	16.65	8.50	1.50	2.20
Range	8.55–120.66	0.50–109.10	0.20–65.06	0.50–6.70
TNM (3)
Median	19.72	5.00	1.51	2.00
Range	6.34–191.80	0.20–85.80	0.20–25.80	0.50–3.10
TNM (4)
Median	28.60	23.60	1.60	2.90
Range	11.10–82.82	2.70–277.00	0.10–6.30	0.70–9.10
pb Kruskal–Wallis test	0.16	0.12	0.76	0.01
Pc post hoc Dwass–Steel–Critchlow–Fligner Kruskal–Wallis test
1 + 2 versus 3	0.85	0.98	0.92	0.504
1 + 2 versus 4	0.24	0.32	0.99	0.32
3 versus 4	0.27	0.12	0.73	0.004
T factor (T1 + 2)
Median	16.28	6.25	1.49	2.50
Range	8.55–40.72	0.50–109.10	0.20–10.10	0.50–6.70
T factor (T3)
Median	22.76	6.00	1.40	2.10
Range	6.34–191.80	0.20–85.80	0.20–65.06	0.50–5.00
T factor (T4)
Median	28.60	35.90	2.10	2.90
Range	19.58–82.82	5.20–277.00	0.10–5.00	0.70–9.10
pb Kruskal–Wallis test	0.041	0.021	0.77	0.009
pc post hoc Dwass–Steel–Critchlow–Fligner Kruskal–Wallis test
1 + 2 versus 3	0.367	0.939	0.901	0.196
1 + 2 versus 4	0.030	0.037	0.696	0.630
3 versus 4	0.224	0.033	0.930	0.010
N factor (N0)
Median	16.65	8.50	1.47	2.20
Range	8.55–120.66	0.50–126.30	0.20–65.06	0.50–9.10
N factor (N1)
Median	25.07	11.00	1.62	2.50
Range	6.34–191.80	0.20–277.00	0.10–25.80	0.50–5.80
pa Manna–Whitney test	0.36	0.60	0.86	0.90
M factor (M0)
Median	20.35	8.30	1.66	2.20
Range	6.34–191.80	0.20–126.30	0.10–65.06	0.50–9.10
M factor (M1)
Median	28.14	13.05	1.28	2.55
Range	11.10–62.46	2.70–277.00	0.63–6.30	0.70–5.00
pa Manna–Whitney test	0.34	0.34	0.95	0.42

^aStatistically significant when p < 0.05 in Mann–Whitney test

^bStatistically significant when p < 0.05 in Kruskal–Wallis test

^cStatistically significant when p < 0.05 in post hoc Dwass–Steel–Critchlow–Fligner Kruskal–Wallis test