Relationships among Depression, Anxiety, Sleep, and Quality of Life in Patients with Parkinson’s Disease in Taiwan

Table 4

The correlations among variables .

MMSE

Disease duration

H&Y stage

UPDRS

UPDRS part I

UPDRS part II

UPDRS part III

UPDRS part VI

BAI

BDI

PDSS-2

LEDD

PDQ-39

MMSE

—

Disease duration

−0.02

—

H&Y stage

−0.15

—

UPDRS

−0.17

—

UPDRS part I

−0.15

—

UPDRS part II

−0.13

—

UPDRS part III

—

UPDRS part VI

0.17

—

BAI

−0.03

—

BDI

−0.13

0.15

—

PDSS-2

0.05

0.16

—

LEDD

0.01

—

PDQ-39

—

H&Y: Hoehn and Yahr scale; UPDRS: Unified Parkinson’s Disease Rating Scale; BAI: Beck Anxiety Inventory; BDI: Beck Depression Inventory; PDSS-2: Parkinson’s Disease Sleep Scale-2; PDQ-39: 39-item Parkinson’s Disease Questionnaire; LEDD: levodopa equivalent daily dosage. and .