Table 1.

Clinical and demographic data.

	Training data	Independent test data
Number	111	27
Gross total resection or subtotal resection (in %)
GTR	77.48	77.78
STR	22.52	22.22
Mean age (years)	58.80	59.12
Gender (in %)
Male	27.93	25.93
Female	72.07	74.07