Low mortality rate in the study made it hard to find prognostic factors and only increasing age was found to be the strong negative prognostic factor although bulky disease was a probable negative prognostic factor.
Lág dánartíðni olli því að erfitt var að finna forspárþætti fyrir horfur. Hækkandi aldur var þó sterkur neikvæður forspárþáttur og fyrirferðarmikill sjúkdómur mögulegur neikvæður áhættuþáttur.