Нашел в форуме перевод "вложенное разделение", но к контексту это, на мой взгляд, не подходит:

The Radiation Therapy Oncology Group classification
derived from a recursive partitioning analysis
(RPA) identified three groups of patients according to
prognostic factors related to tumour based on Karnofsky
performance score, primary tumor status, presence of
extra-cranial metastases and age.

Заранее благодарю.

Марко