Table 1 Characteristics of research participants who enrolled and who completed the month-12 visit

From: Using a smartwatch and smartphone to assess early Parkinson’s disease in the WATCH-PD study over 12 months

 

Enrolled baseline results

Enrolled and completed the month-12 visit month-12 results

 

Characteristic

PD cohort (n = 82)

Control cohort (n = 50)

P value

PD cohort without starting anti-Parkinson medication (n = 57)

Control cohort (n = 49)

P value

Demographic characteristics

Age, y

63.3 (9.4)

60.2 (9.9)

0.07

64.1 (9.4)

61.5 (9.7)

0.17

Male, n (%)

46 (56)

18 (36)

0.03

32 (56)

18 (37)

0.05

Race, n (%)

  

0.81

  

0.51

 White

78 (95)

48 (96)

 

55 (96)

47 (96)

 

 Black or African American

0 (0.0)

0 (0)

 

0 (0.0)

0 (0)

 

 Asian

3 (4)

1 (2)

 

2 (4)

1 (2)

 

 Not specified

1 (1)

1 (2)

 

0 (0.0)

1 (2)

 

Hispanic or Latino, n (%)

3 (4)

1 (2)

0.99

2 (4)

1 (2)

0.99

Education >12 years, n (%)

78 (95)

48 (96)

0.99

54 (95)

47 (96)

0.99

Clinical characteristics

Right or mixed handedness, n (%)

74 (90)

47 (94)

0.53

51 (89)

46 (94)

0.50

Parkinson’s disease duration, months

10.0 (7.3)

N/A

N/A

22.1 (7.3)

N/A

N/A

Hoehn and Yahr, n (%)

  

<0.001

  

<0.001

 Stage 0

0 (0)

49 (100)

 

0 (0)

47 (96)

 

 Stage 1

19 (23)

0 (0)

 

7 (12)

1 (2)

 

 Stage 2

62 (76)

0 (0)

 

49 (86)

1 (2)

 

 Stage 3–5

1 (1)

0 (0)

 

1 (2)

0 (0)

 

MDS-UPDRS

 Total score

35.2 (12.4)

5.9 (5.3)

<0.001

40.5 (14.2)

6.4 (5.0)

<0.001

 Part I

5.5 (3.6)

2.8 (2.6)

<0.001

5.9 (4.0)

3.0 (3.5)

<0.001

 Part II

5.6 (3.8)

0.4 (1.0)

<0.001

7.1 (4.7)

0.4 (1.1)

<0.001

 Part III

24.1 (10.2)

2.7 (3.5)

<0.001

27.4 (11.1)

2.9 (3.3)

<0.001

Montreal Cognitive Assessment

27.6 (1.4)

28.1 (1.5)

0.04

27.5 (2.3)

28.5 (1.8)

0.02

Parkinson’s Disease Quality of Life Questionnaire

7.7 (6.7)

N/A

N/A

9.1 (8.3)

N/A

N/A

Geriatric Depression Scale (short version)

1.6 (1.9)

1.0 (1.2)

0.05

1.8 (1.5)

1.0 (1.4)

0.004

REM Sleep Behavior Disorder Questionnaire

4.4 (3.1)

2.7 (2.0)

<0.001

4.5 (3.2)

2.5 (2.1)

<0.001

Epworth Sleepiness Scale

4.9 (3.2)

4.6 (3.7)

0.66

4.8 (2.5)

4.4 (3.4)

0.50

Scale for Outcomes in Parkinson’s Disease for Autonomic Symptoms

9.1 (5.1)

5.3 (4.2)

<0.001

9.2 (5.4)

5.1 (4.4)

<0.001

  1. PD Parkinson’s disease, N/A not available, MDS-UPDRS Movement Disorder Society—Unified Parkinson’s Disease Rating Scale.
  2. Results are mean (standard deviation) for continuous measures and n (%) for categorical measures.
  3. One control cohort participant is missing baseline Hoehn and Yahr and MDS-UPDRS scores and one additional is missing the MDS-UPDRS part III and total scores.
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