Table 4.

Correlation analyses between the motor reserve estimate and cognitive composite scores

	Correlation coefficient	p	Q†
Visual memory/visuospatial*	0.119	0.129	0.774
Verbal memory*	0.246	0.002	0.010
Frontal/executive*	0.137	0.082	0.491
Attention/working memory/language*	0.201	0.010	0.061
Global cognitive composite score*	0.237	0.002	0.014
Education (yr)	0.251	< 0.001	0.001

^*the composite scores for each cognitive function domain and the risk score of PDD conversion within 5 years were calculated using the formula described in our previous work15;

^†Bonferroni-corrected p value to correct multiple testing in correlation analyses.

PDD, Parkinson’s disease dementia.