Table 2:

Demographics of the 79 patients undergoing chordoma surgery in Beijing Tiantan Hospital between July 2012 and July 2016

	Total	MRT	CDT	P
No. of cases	79	39	40
Tumor status
Primary	37	24	13	.01
Recurrent	42	15	27	.01
Sex
Male	43	21	22	.918
Female	36	18	18	.918
Age (mean) (yr)
Primary	47.8 ± 17.4	42.3 ± 18.2	58.2 ± 9.97	.006
Recurrent	47.1 ± 15.3	46.5 ± 16.5	47.6 ± 14.9	.828
Total	47.5 ± 16.2	43.9 ± 17.5	51.0 ± 14.3	.050
Histopathology
Conventional	71	35	36	1.000
Chondroid	8	4	4	1.000
Blood supply^{^a}
Rich	21	7	14	.073
Not rich	55	31	24	.073
Resection grade
≥90%	43	23	20	.423
<90%	36	16	20	.423
Survival status
Alive	42	27	15	.018
Died	26	8	18
NA^{^b}	11	4	7
Presurgery radiation therapy
Yes	17	5	12	.063
No	62	34	28	.063
Postsurgery radiation therapy
Yes	30	14	16	.667
No	43	21	22
NA^{^c}	6	4	2
PFS (mo)^{^d}	40.3 ± 5.4	52.2 ± 5.7	18.7 ± 6.9	.003
OS (mo)	100.5 ± 7.1	113.9 ± 6.3	88.9 ± 9.3	.018

Note:—NA indicates not applicable.
↵a Operative notes on 3 cases showed no specified blood supply.
↵b Including both patients lost to follow-up and patients who did not die of chordomas.
↵c Including the patients whose radiation therapy information was not available.
↵d Patients without radiation therapy (n = 32).