Table 1 Features extracted and comparison between datasets.

From: Patterns of activity correlate with symptom severity in major depressive disorder patients

Train dataset (N = 12)

  

Test dataset (N = 12)

Average

SD

Min

Max

Average

SD

min

max

p

MADRS

29.2

3.3

23

35

28.8

4.2

24

37

0.83

Rec. length

9.9

2.5

6

13

6.7

0.8

5

7

0.00

Age

48.1

14.7

25

78

42.1

12.1

20

63

0.29

Sex (M/F)

 

3/9

   

5/7

  

0.39

Period

24.0

0.1

23.9

24.2

24.1

0.6

23.5

25.4

0.53

M10*

9511

2771

4064

13,058

337

126

152

656

0.00

M10L

14.9

2.6

11.8

18.9

15.8

2.2

12.4

20.4

0.36

L5*

728

513

255

1673

25

16

8

62

0.00

L5L

3.8

1.0

1.6

5.7

5.3

3.3

0.9

11.2

0.15

RA

0.86

0.08

0.69

0.94

0.85

0.09

0.65

0.96

0.82

Alpha full

0.99

0.03

0.95

1.05

0.99

0.02

0.95

1.03

0.95

Alpha short

1.01

0.04

0.95

1.10

0.98

0.03

0.93

1.03

0.08

Alpha long

1.03

0.08

0.91

1.19

0.99

0.32

0.00

1.22

0.65

IV5

0.51

0.09

0.35

0.68

0.51

0.05

0.42

0.60

0.80

IV30

0.70

0.15

0.47

1.02

0.70

0.13

0.52

1.00

0.99

IV60

0.83

0.13

0.64

1.12

0.73

0.14

0.43

0.95

0.08

IS5

0.33

0.04

0.29

0.41

0.31

0.08

0.19

0.44

0.55

IS30

0.39

0.04

0.33

0.45

0.39

0.11

0.22

0.56

0.96

IS60

0.51

0.06

0.38

0.62

0.45

0.14

0.25

0.63

0.15

  1. Asterisks indicate features dependent on data collection device, for which the magnitude depends on the output of specific sensors. p-values are calculated using Student’s t-test (two-sided) for continuous variables, or chi-square for ratios as appropriate.