Table 5. Factors associated with a poor overall survival in mutivariate analysis (n=255).

Variable	Hazard ratio (95% CI)	P-value
Performance status (ECOG)
2	3.526 (2.07–5.99)	<0.0001
Histology
Mucinous	1.593 (1.05–2.40)	0.0267
Number of metastatic sites
⩾2	1.472 (1.04–2.08)	0.0300
Peritoneal metastasis
Yes	1.588 (1.01–2.49)	0.0461
Haemoglobin level
⩽12 g l−1	1.123 (0.81–1.55)	0.4870

ECOG=Eastern Cooperative Oncology Group; CI=confidence interval.