Table 2.

Results of univariate Cox analysis.

Variables	Number of patients, n (%)	HR	95% CI for HR	P value
Race
White	500 (71.9%)	Reference		.349
Black	129 (18.6%)	1.883	1.364–2.599	<.001***
Other	66 (9.5%)	0.667	0.360–1.235	.197
Gender
Male	343 (49.4%)	Reference
Female	352 (50.6%)	0.890	0.670–1.200	.450
Year of diagnosis
≥2014	162 (23.3%)	Reference
<2014	533 (76.7%)	1.014	0.611–1.684	.956
Histology
Papillary	84 (12.1%)	reference		.060
Adamantinomatous	236 (34.0%)	1.460	0.830–2.569	.189
Craniopharyngioma, NOS	375 (54.0%)	1.671	0.975–2.864	.062
Surgery types
No surgery	116 (16.7%)	Reference		.014 *
Biopsy/STR	289 (41.6%)	0.694	0.474–1.016	.061
GTR	290 (41.7%)	0.674	0.454–1.000	.050 *
Radiotherapy
No	526 (75.7%)	Reference
Yes	169 (24.3%)	0.670	0.460–0.970	.033 *
Tumor size, mm
<25	207 (29.8%)	Reference		.003 **
≥25	285 (41.0%)	1.890	1.300–2.747	<.001***
Unknown	203 (29.2%)	1.834	1.231–2.732	.003 **
Age at diagnosis, yr
<52	358 (51.5%)	Reference
≥52	337 (48.5%)	3.500	2.600–4.900	<.001***
Marital status
Single	283 (40.7%)	Reference		.224
Married	359 (51.7%)	0.733	0.544–0.987	.041 *
Unknown	53 (7.6%)	0.999	0.586–1.705	.998

The bold P values indicate significant (P < .05) or marginally significant (P <.15) differences, and the corresponding variables were further analyzed using multivariate Cox model.

CI = confidence interval, GTR = gross total resection, HR= hazard ratio, NOS = not other specific, STR = subtotal resection.

^*P < .05

^**P < .01

^***P < .001.