Construction, Validation, and Visualization of Two Web-Based Nomograms for Predicting Overall Survival and Cancer-Specific Survival in Elderly Patients with Primary Osseous Spinal Neoplasms

Table 2

The demographic and clinicopathologic information of elderly patients with POSNs in the CSS group.

Variables	Total set; ()		Training set; ()		Validation set; ()		value
		%		%		%
Age
61-70	138	47.75	98	47.80	40	47.62	0.521
71-80	93	32.18	69	33.66	24	28.57
>80	58	20.07	38	18.54	20	23.81
Race
Black	14	4.84	9	4.39	5	5.95	0.093
Other	23	7.96	12	5.85	11	13.10
White	252	87.20	184	89.76	68	80.95
Sex
Female	118	40.83	83	40.49	35	41.67	0.853
Male	171	59.17	122	59.51	49	58.33
Histological type
Chordoma	141	48.79	102	49.76	39	46.42	0.925
Chondrosarcoma	96	33.22	68	33.17	28	33.33
Osteosarcoma	18	6.23	12	5.85	6	7.14
Other	34	11.76	23	11.22	11	13.10
Grade
Grade I	35	12.11	24	11.70	11	13.10	0.253
Grade II	44	15.22	26	12.68	18	21.43
Grade III	28	9.69	19	9.27	9	10.71
Grade IV	35	12.11	25	12.20	10	11.90
Unknown	147	50.87	111	54.15	36	42.86
T stage
T1	161	55.71	110	53.66	51	60.71	0.523
T2	118	40.83	88	42.93	30	35.72
T3	10	3.46	7	3.41	3	3.57
N stage
N0	279	96.54	198	96.59	81	96.43	0.947
N1	10	3.46	7	3.41	3	3.57
M stage
M0	259	89.62	185	90.24	74	88.10	0.587
M1	30	10.38	20	9.76	10	11.90
Marital status
Married	187	60.71	132	64.39	55	65.48	0.861
Unmarried	102	35.29	73	35.61	29	34.52
Tumor size(cm)
<6	101	34.95	66	32.20	35	41.67	0.250
6-12	135	46.71	98	47.80	37	44.05
>12	53	18.34	41	20.00	12	14.28
Surgery
No	108	37.37	77	37.56	31	36.90	0.917
Yes	181	62.63	128	62.44	53	63.10
Radiotherapy
No	186	64.36	133	64.88	53	63.10	0.774
Yes	103	35.64	72	35.12	31	36.90
Chemotherapy
No	251	86.85	178	86.83	73	86.90	0.986
Yes	38	13.15	27	13.17	11	13.10