Table 4.

Hazard ratios for survival from stepwise, backward, and multivariate Cox hazard regression after multiple imputation (40 imputations)

	HR	95% Confidence interval	p value
Age	1.013	1.007–0.019	<0.001
Location skeleton	0.167	1.010–1.349	0.036
Category 1 (slow growth)	Reference
Category 2 (moderate growth)	1.580	1.318–1.895	<0.001
Category 3 (rapid growth)	2.918	2.450–3.475	<0.001
Other bone metastases	1.201	1.029–1.401	0.020
Visceral metastases	1.544	1.333–1.789	<0.001
Previous systemic therapy	1.233	1.063–1.431	0.006
Hemoglobin	0.890	0.851–0.931	<0.001
NLR	1.311	1.117–1.538	0.001
PLR	1.358	1.152–1.601	<0.001

NLR neutrophil-to-lymphocyte ratio, PLR  platelet-to-lymphocyte ratio