Variables		No.	Median Survival Time (Month)	5-Year Survival (%)÷(CI)	Univariate		Multivariate
					HR	p-Value	HR	p-Value
Sex	Male Female	1684 1333	-÷-	62 (59–64)	Reference	0.9198	Reference	0.1549
				62 (59–64)	1.01 (0.89–1.13)		0.92 (0.81–1.03)
Location	Extremity	2291	-	68 (66–70)	Reference	<0.0001÷	Reference	<0.0001
	Axial	403	25	36 (31–41)	2.72 (2.33–3.17)		0.91 (1.62–2.24)
	Elsewhere	323	54	49 (43–55)	1.77 (1.48–2.12)		1.31 (1.09–1.58)
Extent of disease÷(since 2006)	Localized	910	-	73 (69–76)	Reference	<0.0001	Reference	<0.0001
	Metastasis	644	41	44 (40–48)	2.60 (2.19–3.10)		2.40 (2.03–2.84)
	Unknown	413	-	71 (66–75)	0.98 (0.78–1.24)		1.57 (1.34–1.83)
Age group	Young children	214	-	78 (71–83)	Reference	<0.0001	Reference	<0.0001
	Pubertal children	610	-	73 (70–77)	1.24 (0.90–1.70)		1.22 (0.89–1.67)
	AYA	1307	-	68 (65–71)	1.47 (1.09–1.98)		1.35 (1.00–1.82)
	Adults	608	44	47 (43–51)	3.06 (2.64–4.16)		2.55 (1.87–3.47)
	Elderly	278	20	25 (20–31)	5.88 (4.28–8.08)		4.69 (3.39–6.49)