Table II.

Univariate and multivariate risk factors for mortality among patients with peripheral primary neuroectodermal tumors.

	Univariate analysis (n=89)		Multivariate analysis (n=89)
Characteristics	HR (95% CI)	P-value	aHR (95% CI)	P-value
Age, years
<20	1.00		–	–
≥20	1.90 (1.08–3.32)	0.025	–	–
Sex
Female	1.00	–	–	–
Male	1.39 (0.84–2.31)	0.200	–	–
Tumor size, cm
≤10	1.00	–	1.00	–
>10	2.54 (1.50–4.30)	0.001	3.65 (2.07–6.42)	<0.001
Location
Thoracopulmonary	1.19 (0.47–2.98)	0.714	–	–
Abdomen/pelvis	1.11 (0.46–2.67)	0.825	–	–
Paravertebral	1.25 (0.38–4.11)	0.712	–	–
Head and neck	0.29 (0.06–1.45)	0.133	–	–
Extremities	1.00	–	–	–
Lymph nodes
No	1.00	–	–	–
Yes	1.37 (0.75–2.50)	0.314	–	–
Metastasis
No	1.00	–	1.00	–
Yes	3.98 (2.16–7.32)	<0.001	4.34 (2.23–8.42)	<0.001
Therapy
No	1.00	–	1.00	–
Mono-therapy	0.38 (0.17–0.86)	0.019	0.67 (0.28–1.59)	0.358
Combined	0.12 (0.05–0.29)	<0.001	0.16 (0.06–0.39)	<0.001

CI, confidence interval; HR, hazard ratio; aHR, adjusted hazard ratio.