x1: Sex
x2: interval to diagnosis
x3: Grade of malignancy
x4: Grade of malignancy
x5: Age, years
x6: Karnofsky index > 60
x7: Karnofsky index > 85
x8: Type of surgical resection
x9: Type of surgical resection
x10: Convulsiva
x11: Cortisone
x12: Epilepsy
x13: Amnesia
x14: Organic psychosyndrome
x15: Aphasia
x16: treatment
t: survival time, days
d: dead/censored
interval to diagnosis, months
Karnofsky index, continuous