The mean total GBI score we measured in our study group was −0.1, which suggests a very small impact of GKRS on the QOL. However, the standard deviation (14.6) and the range (from −33.3 to 52.8) point at the presence of large inter-individual variations.
We have tried to identify individual variables that could explain these variations. In this search, we found some indication of a better QOL after treatment in patients who were diagnosed at an older age (>60 years), but this outcome was not significant.