Table II.

Kaplan-Meier analysis and Cox proportional hazards analyses of patients with malignant triton tumor.

	Kaplan-Meier analysis			Cox proportional hazards analyses
Category	Numbera	Mean time to death, monthsb	P-value	HR	95% CI for HR	P-value
Gender			0.207			0.494
Male	78	34.24
Female	53	28.46		1.312	0.602–2.858
Age, yearsc
≤32	68	25.68	0.013d			0.423
>32	65	36.87		0.736	0.602–1.558
Location			0.638
Head and neck	48	29.22
Trunk	56	31.87		0.944	0.392–2.272	0.845
Limbs	26	30.37		0.912	0.602–2.303	0.942
NF-1			0.000d			0.440
Yes	72	17.80
No	40	36.59		1.312	0.628–2.914
Complete resection			0.010d			0.032d
Yes	76	34.23
No	39	22.50		0.396	0.170–0.925
Radiotherapy			0.002d			0.131
Yes	67	36.24
No	54	22.99		0.572	0.277–1.181
Chemotherapy			0.430			0.244
Yes	41	31.97
No	80	29.15		0.594	0.248–1.426
Recurrence			0.129			0.511
Yes	45	27.82
No	66	35.96		1.278	0.615–2.655
Metastasis			0.000d			0.004d
Yes	37	18.12
No	71	39.80		3.188	1.450–7.008

^aFollow-up data was available for 133 patients, but the total number in every category varies due to lack of data for certain cases.

^bEstimation is limited to the longest survival time if censored.

^cThe median age of the 133 patients with follow-up data was 32 years.

^dP<0.05. HR, hazard ratio; CI, confidence interval.