Table 5. Multivariate analysis of prognostic factors on overall survival.

Factors	Hazard ratio	95% confidence interval	P
>1 metastatic sites	1.275	1.01–1.61	0.041
Alkaline phosphatase >ULN	1.951	1.519–2.506	<0.001
Haemoglobin ⩽11g l−1	1.65	1.247–2.188	<0.001
White blood cell >11 × 109 l−1	1.662	1.248–2.212	0.001
Previous pelvic radiotherapy	1.684	1.213–2.339	0.002
Performance status			0.092
Agea			0.734
Sexa			0.512

^aUnivariate analyses. ULN: upper limit of normal.