Figure 2From: Motor function in Parkinson's disease and supranuclear palsy: simultaneous factor analysis of a clinical scale in several populations Residual covariances for the Tremor-at-Rest variables and the Rigidity variables. Values are those from the common metric completely standardised solution. The bold values have t-values larger than 3. The order of the three numbers is always: PD-On, PD-Off, PSP.Back to article page