Table 5.

Predictors of HRQoL in stepwise multiple regression analysis

Model	Unstandardized coefficients		p value
	B	SE
BDI	0.734	0.089	0.0001
MDS-UPDRS Part IB	0.603	0.201	0.003
MDS-UPDRS Part II	0.546	0.127	0.0001
MDS-UPDRS Part III	0.067	0.050	0.182
Age	-0.124	0.077	0.108
Duration of the disease	0.251	0.184	0.175
Duration of levodopa treatment	-0.339	0.211	0.109
	Multiple	R2 = 0.611
	Adjusted	R2 = 0.599

HRQoL, health-related quality of life; SE, standard error; BDI, Beck depression inventory; MDS-UPDRS, Movement Disorder Society Unified Parkinson’s Disease Rating Scale