Table 2.

Results of univariate Cox regression.

Characteristic	n	Event (n)	HR	95% CI	p-value
Age (year)
≥45	169	91	‒	‒
<45	133	82	1.25	0.93, 1.69	0.139
Race
White	231	135	‒	‒
Black	37	22	1.04	0.67, 1.64	0.851
Other (American Indian/AK Native, Asian/Pacific Islander)	34	16	0.72	0.43, 1.20	0.207
Sex
Female	143	74	‒	‒
Male	159	99	1.39	1.03, 1.89	0.031
Extension (mm)
≥350	122	89	‒	‒
<350	180	84	0.48	0.35, 0.64	<0.001
tumor size (mm)
≥60	168	116	‒	‒
<60	134	57	0.48	0.35, 0.66	<0.001
AJCC Stage
I + II	151	60	‒	‒
III	80	54	2.10	1.45, 3.03	<0.001
IV	71	59	4.77	3.31, 6.88	<0.001
Primary site
Soft Tissue	232	143	‒	‒
Cranial Nerves Other Nervous System	46	21	0.65	0.41, 1.02	0.061
Brain	11	3	0.33	0.11, 1.05	0.060
Other	13	6	0.65	0.29, 1.48	0.305
Chemotherapy status
No/Unknown	228	117	‒	‒
Yes	74	56	1.88	1.37, 2.60	<0.001
Surg/Rad status
Surgery	172	99	‒	‒
Rad + Sur	130	74	0.86	0.63, 1.16	0.316

HR, Hazard Ratio; CI, Confidence Interval.