Table 1 Demographic and clinical characteristics of participants with normal vs abnormal DaT Scans

From: Smartphone-based prediction of dopaminergic deficit in prodromal and manifest Parkinson’s disease

 

Normal DaT Scan

Abnormal DaT Scan

P-value

N participantsa

45

48

-

N DaT Scans

48

52

-

N DaT Scans PD/RBD/HC

3/44/5

36/12/0

-

N smartphone recordings/participant (μ ± SD)

12.08 ± 14.67

6.75 ± 8.69

-

Sex (male %)

84.14

72.22

0.00001

Age (μ ± SD)

67.56 ± 8.02

68.32 ± 8.72

0.20

MDS-UPDRS-III (μ ± SD)

5.52 ± 6.24

25.69 ± 11.82

<0.00001

Interval between recording and scan (absolute days)

191 ± 147

183 ± 137

0.41

Interval (recording pre scan)

194 ± 165

165 ± 145

0.04

Interval (recording post scan)

189 ± 129

206 ± 121

0.06

  1. Values are presented as mean ± standard deviation or percentages, with p-values indicating differences between the two groups. The interval values represent the time (in days) between smartphone recording and DaT scan. Bold values indicates statistical significant P values (p < 0.05).
  2. aFor participants with longitudinal scans, abnormal versus normal classification was based on the status at their first available DaT scan.
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