Table 2. Results of univariate analysis of clinical, pathological and immunohistochemical parameters related to disease-specific 5-year survival.

	Odds ratio (confidence interval)	P-value
Patient sex (male vs female)	1.2 (0.7–2.3)	0.435
Patient ASA classification (0 and 1 vs 2 or 3)	1.0 (0.5–2.0)	0.974
Patient age (70 and higher vs lower than 70 years)	1.1 (0.5–2.2)	0.283
Tumour T stage (3 vs 1 and 2)	4.1 (2.4–7.2)	0.001
Tumour N stage (1 vs 0)	4.9 (2.8–8.6)	0.000
tumour M1a stage (1 vs 0)	3.7 (2.2–6.5)	0.035
Differentiation grade (moderate and poor vs good)	2.2 (1.3–3.6)	0.015
Met expression (high vs low)	3.5 (2.0–5.9)	0.000
COX-2 expression (high vs low)	1.4 (0.8–2.6)	0.234