Table 3.

Path coefficients for the model showing the effect of PD severity on QOL

Path			Path coefficient	p
H-Y	→	UPDRS II	3.033	< 0.001
UPDRS II	→	GDS	0.338	< 0.001
H-Y	→	GDS	2.077	< 0.001
GDS	→	MCS	− 1.329	< 0.001
H-Y	→	MCS	− 0.386	0.548
UPDRS II	→	MCS	0.117	0.302
GDS	→	PCS	− 0.298	0.029
H-Y	→	PCS	− 3.170	< 0.001
UPDRS II	→	PCS	− 0.743	< 0.001

HY: Modified Hoehn and Yahr Scale, UPDRS II: Unified Parkinson’s Disease Rating Scale, GDS: Geriatric Depression Scale, PCS: physical component summary, MCS: mental component summary