Table 3.

Univariate analysis for overall survival

VariableNo. of patients5-y survial rateP
Age, y
 <504551.40.41
 ≥503753.2
Sex
 Male4347.40.28
 Female3957.4
NF1
 Present3241.10.26
 Absent5057.7
Site
 Extremity3664.30.041
 Trunk4642.5
Tumor depth
 Superficial2078.60.004
 Deep6243.4
Tumor size
 <5cm2378.30.006
 ≥5cm5941.7
Adjuvant therapy
 Given350.00.47
 Not given7952.0
Tumor necrosis
 Absent3863.40.067
 Present4442.3
Mitotic counts
 0–9/10HPF5653.70.43
 ≥10/10HPF2647.1
Ki-67–labeling index
 0%–29%5863.8<0.001
 ≥30%2421.0
Microvessel density
 <15/HPF3965.60.06
 ≥15/HPF4339.7
Rhabdomyoblastic differentiation
 Present1033.80.20
 Absent7254.5
Epithelioid feature
 Present520.00.11
 Absent7754.6
FNCLCC grading
 12572.50.030
 2 + 35743.4
AJCC staging
 I2572.50.030
 II + III + IV5743.4
p14ARF IHC
 Preserved4274.1<0.001
 Decreased4028.5
p15INK4b IHC
 Preserved3867.90.051
 Decreased4438.9
p16INK4a IHC
 Preserved4168.90.002
 Decreased4134.0