Table 2.

Univariate analysis of OS and CSS in the training cohort.

Category	OS (Log-rank p-value)	CSS (Log-rank p-value)
Age at diagnosis(<60 vs. ≥60)	< 0.001	< 0.001
Gender (female vs. male)	0.811	0.812
Year of diagnosis (<2,000 vs. ≥2,000)	0.134	0.435
Location (upper limb vs. lower limb)	0.007	0.001
Tumor gradea (low vs. high)	< 0.001	< 0.001
Distant metastasis (yes vs. no)	< 0.001	< 0.001
Tumor size	< 0.001	< 0.001
>10 cm vs. <5 cm	< 0.001	< 0.001
>10cm vs. 5–10 cm	< 0.001	< 0.001
5–10 cm vs. <5 cm	< 0.001	< 0.001
Surgical treatment (yes vs. no)	< 0.001	< 0.001
Radiation treatment (yes vs. no)	0.154	0.024

^aLow: Grade I (well differentiated) and Grade II (moderately differentiated); High: Grade III (poorly differentiated) and Grade IV (undifferentiated anaplastic). OS, overall survival; CSS, cancer-specific survival.