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Table 3 Sleep, depression, and quality of life in participants with major depressive disorders (MDD) and controls

From: Comparison of self-reported scales and structured interviews for the assessment of depression in an urban male working population in Japan: a cross-sectional survey

  

MDD

Control

p-value

n

 

24

290

 

Age

(years)

41.3 ± 6.98

44.2 ± 8.41

0.109

BMI

(kg/m2)

23.1 ± 2.94

23.7 ± 3.03

0.344

PSQI

 

5.58 ± 2.28

4.76. ± 1.97

0.052

>5 (n, %)

12, 50.0%

84, 29.5%

0.037

ESS

 

9.26 ± 4.65

8.06 ± 4.19

0.184

>10 (n, %)

9, 37.5%

75, 26.7%

0.256

TST (questionnaire)

(hr)

5.93 ± 0.57

5.90 ± 0.87

0.882

TST (actigraphy)

(hr)

5.15 ± 0.87

5.22 ± 0.80

0.690

Weekday sleep debt (Actigraphy)

(hr)

1.06 ± 1.78

0.80 ± 1.36

0.401

SL (actigraphy)

(min)

15.3 ± 9.45

15.4 ± 16.4

0.970

SDS

 

38.8 ± 6.25

36.1 ± 6.26

0.038

≤39

12

200

0.020

40-49

11

70

 

≥50

1

5

 

SF-36

PF

53.4 ± 5.19

53.8 ± 6.57

0.746

RP

51.3 ± 6.89

52.5 ± 7.24

0.423

BP

48.5 ± 9.54

51.6 ± 9.23

0.107

GH

45.4 ± 9.27

51.4 ± 8.90

0.002

VT

44.6 ± 8.85

50.7 ± 7.90

<0.001

SF

46.7 ± 13.0

53.4 ± 6.64

<0.001

RE

47.4 ± 7.89

52.0 ± 7.44

0.004

MH

44.7 ± 8.50

51.3 ± 8.31

<0.001

  1. Data were compared between participants without psychiatric disorders (control) and those with current and past MDD using independent t-tests and chi-square tests. Five, 9, 15, and four participants did not answer the PSQI, ESS, SDS, and SF-36, respectively. Actigraphy data from 12 participants were missing. Total sleep time (TST) was obtained from the questionnaires and via actigraphy. Sleep latency (SL) and weekday sleep debt were estimated from the actigraphy data. The weekday sleep debt was calculated as the TST on weekends minus the TST on weekdays
  2. PSQI Pittsburgh Sleep Quality Index, ESS Epworth sleepiness scale, Medical Outcomes Study 36-item Health Survey (SF-36), PF physical functioning, RP role limitations due to physical health (role-physical), BP bodily pain, GH general health perceptions, VT vitality, SF social functioning, RE role limitations due to emotional problems (role-emotional); and MH mental health