Table 2.

Analysis of predictors of event-free survival (EFS).

Characteristic	3-year EFS (95% CI)	Log-rank test p value
Clinical trial
NRSTS2005	91.7% (79.4%, 100%)	0.34
ARST0332	88.8% (78.2%, 99.4%)
Age
≤10 years	82.4% (63.6%, 100%)	0.19
>10 years	93.0% (84.9%, 100%)
Gender
Male	86.1% (74.0%, 98.2%)	0.10
Female	95.7% (87.1%, 100%)
FNCLCC gradea
2	88.8% (79.0%, 98.7%)	0.19
3	100%
Maximal tumour diameterb
≤3 cm	86.5% (73.3%, 99.8%)	0.03
>3 cm	100%
Anatomic site (extremity only)
Proximal extremity	91.7% (79.4%, 100%)	0.22
Distal extremity	86.2% (73.1%, 99.3%)

^a8 with missing data.

^b9 with missing data.