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Table 1 Demographic information of participants at baseline (N = 283)

From: Evaluation of PDQ-8 and its relationship with PDQ-39 in China: a three-year longitudinal study

 

Median

Quartile/Percentage

Floor/Ceiling %

Gender (male)

166

58.7%

 

Age (year)

57

45–64

 

Age of onset (year)

51

41–60

 

Duration of disease (month)

36

18–67

 

Education (year)

  < 7

29

10.2%

 

 7–12

145

51.1%

 

  > 12

109

38.5%

 

H&Y stage

 1

71

25.1%

 

 2

130

45.9%

 

 3

73

25.7%

 

 4

7

2.5%

 

 5

2

0.7%

 

UPDRS-III

30

20–38

 

LEDD (mg)

300

75–451

 

BDI

11

6.0–18.0

 

MMSE

28

27–29

 

PDQ-8-SI

18.8

9.4–31.3

6.0%/0

PDQ-39-SI

17.3

9.0–27.6

0.4%/0

 Mobility

15

5.0–30.0

14.5%/0

 Activity of daily living

12.5

0.0–28.2

25.8%/0

 Emotional well-being

16.7

8.3–33.3

15.5%/0.4%

 Stigma

18.8

0.0–37.5

25.1%/2.5%

 Social support

0

0.0–8.3

63.6%/0.4%

 Cognitions

18.8

12.5–36.0

11.7%/0.4%

 Communication

8.3

0.0–25.0

45.9%/0.4%

 Bodily discomfort

25

8.3–41.7

18.7%/0.7%

  1. Abbreviations: BDI Beck Depression Inventory, H&Y stage Hoehn and Yahr stage, LEDD Levodopa equivalent daily dose, MMSE Mini–Mental Status Examination, PDQ-8 8-item Parkinson’s disease Questionnaire, PDQ-8-SI PDQ-8 summary index, PDQ-39 39-item Parkinson’s disease Questionnaire, PDQ-39-SI PDQ-39 summary index, UPDRS-III Unified Parkinson’s Disease Rating Scale part III