Table 2.

Cognitive score differences by braak stage

	Braak 0 – II (n = 66)	Braak III (n = 75)	p	Cohen’s d
MMSE	26.54 ± 4.65	24.78 ± 5.91	0.05	0.33
Global cognitive score	−0.22 ± 0.76	−0.53 ± 0.81	0.02	0.39
Episodic memory	−0.04 ± 1.01	−0.42 ± 1.09	0.03	0.36
Semantic memory	−0.05 ± 0.85	−0.47 ± 0.95	0.01	0.47
Working memory	−0.32 ± 0.74	−0.53 ± 0.79	0.11	0.27
Perceptual speed	−0.65 ± 1.13	−1.04 ± 0.99	0.03	0.37
Visuospatial	−0.45 ± 0.81	−0.48 ± 0.80	0.81	0.04

Mean ± standard deviation; z-scores are reported for all cognitive variables except the MMSE.