Table 2.

SVM classification results of FA

	GR	SS	SC	Permutation test
0–6 m vs. controls	84.5%	86.7%	83.6%	P < 0.0001
6–12 m vs. controls	83.9%	75%	86.6%	P < 0.0001
> 12 m vs. controls	74.5%	63%	79.1%	P < 0.0001

GR generalization rate, SS sensitivity, SC specificity, PT permutation test, 0–6 m = post radiotherapy 0–6 months; 6–12 m = post radiotherapy 6–12 months; > 12 m = post radiotherapy > 12 months; vs versus