Table 3.

Final parameters with significant influence on local recurrence in 3 years.

Risk factors	Hazard ratio	P-value
Distance from anal verge (cm)	0.86	0.03
CEA value	1.00	0.01
Operation type	2.07	0.00
Distant metastasis	6.45	0.00
Cut-off Hb levels (12 g/dl)	1.78	0.08
Tumour length (cm)	1.17	0.01

CEA, carcinoembryonic antigen.

Note that patients with a haemoglobin (Hb) of < 12 g/dl are at risk of developing local recurrence (hazard ratio = 1.78) but this was not statistically significant (P = 0.08).