highly significantp < 0.001
A highly significant inverse correlation between age at initial PD diagnosis and time until dementia onset (Spearman’s correlation, ρ = −0.66, p < 0.001) was also found in the PDD group as a whole (Fig. 5 ).
A highly significant inverse correlation between age at initial PD diagnosis and time until dementia onset (Spearman’s correlation, ρ = −0.66, p < 0.001) was also found in the PDD group as a whole (Fig. 5 ).