Table 3.

Comorbidities and cognitive domains: summary of results of hierarchical multiple regression analyses.

	FΔ	R 2Δ	Beta	Sig
Executive function
Final model	3.38	0.138		<0.001
PD severity block	10.247	0.091		<0.001
Duration			−0.156	<0.001
Motor UPDRS			−0.246	<0.001
Comorbidity block	1.460	0.047		0.146
Hypertension			−0.127	0.041
Hypotension			0.134	0.019
Delayed verbal memory
Final model	3.39	0.122		<0.001
PD severity block	9.383	0.078		<0.001
Duration			−0.188	<0.001
Motor UPDRS			−0.227	<0.001
Comorbidity block	1.433	0.043		0.157
Hypertension			−0.139	0.021
Processing speed
Final model	3.977	0.154		<0.001
PD Severity block	15.647	0.129		<0.001
Duration			−0.139	0.019
Motor UPDRS			−0.315	<0.001
Comorbidity block	1.433	0.043		0.157

Only significant predictors are shown. PP: pulse pressure; UPDRS: Unified Parkinson's Disease Rating Scale—Part III.