a trend towards significancep=0.052
The different striatal regions were also compared using a multivariate analysis using age and PD duration as covariates of no interest: the right caudate (F(1,24)=8.91, p=0.006), right putamen (F(1,24)=6.60, p=0.02) and left putamen (F(1,24)=4.59, p=0.04) remained significant with a trend towards significance in the left caudate (F(1,24)=4.18, p=0.052).