A Simple-to-Use Nomogram for Predicting Postoperative Early Death Risk in Elderly Patients with Spinal Tumors: A Population-Based Study

Table 2

Results of univariate and multivariate logistic regression analysis in elderly patients with spinal tumors.

Characteristics	Univariate analysis		Multivariate analysis
	HR (95% CI)	value	HR (95% CI)	value
Age
45–59	Reference		Reference
60–74	1.836 (1.041–3.240)	0.036	2.080 (1.107–3.907)	0.023
Race
Black	Reference
White	0.813 (0.174–3.802)	0.792
Other	1.579 (0.268–9.308)	0.614
Sex
Male	Reference
Female	1.077 (0.635–1.828)	0.783
Grade
Grade I and II	Reference		Reference
Grade III and IV	4.125 (1.900–8.956)	<0.001	2.710 (1.140–6.442)	0.024
Unknown	1.700 (0.827–3.496)	0.149	3.852 (1.492–9.944)	0.005
Stage
Localized	Reference		Reference
Regional	1.310 (0.685–2.506)	0.414	1.346 (0.676–2.679)	0.398
Distant	7.427 (3.514–15.696)	<0.001	4.337 (1.901–9.893)	<0.001
Histological type
Osteosarcoma	Reference		Reference
Chondrosarcoma	0.236 (0.114–0.491)	<0.001	0.424 (0.182–0.987)	0.046
Chordoma	0.096 (0.042–0.221)	<0.001	0.089 (0.033–0.240)	<0.001
Other	0.900 (0.390–2.077)	0.805	0.814 (0.327–2.027)	0.659
Marital status
No	Reference
Yes	1.075 (0.611–1.891)	0.803
Radiotherapy
No	Reference
Yes	0.807 (0.456–1.429)	0.462
Chemotherapy
No	Reference
Yes	1.683 (0.793–3.572)	0.175
Year of diagnosis
1975–1984	Reference
1985–1994	1.550 (0.461–5.207)	0.478
1995–2004	1.937 (0.613–6.124)	0.260
2005–2015	1.087 (0.359–3.289)	0.882