This shows a major difference in outcome between GBM patients who had "radical" surgery vs. thos who did not. They used a criteria of 1.5cm in diameter of residual tumor as the cutoff from radical to non radical surgery. They did not go into detail on outcomes from patients with total resections but it looks like extent of surgery - even on a rough look like this - makes more of a difference than anything else. This goes to show that selecting the right neurosurgeon and medical center - with the most experiance and the best tools, is the most important decision you can make.
The Impact of Surgery on the Efficacy of Adjuvant Therapy in Glioblastoma Multiforme
For full text go to:
www.advances.am.wroc.pl/pdf/2015/24/2/279.pdf