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Table 2 Demographic and clinical characteristics after matching

From: Severe sleep disturbance is associated with executive function impairment in patients with first-episode, treatment-naïve major depressive disorders

 

Group 1 (121)

Group 2 (121)

Effect Size

t, z, or Chi-square

P Value

Age

41.8 ± 9.2

37.1 ± 10.4

0.478

−3.699 a

< 0.001

Education years

11.9 ± 4.0

12.7 ± 3.8

0.205

1.588 a

0.114

Sex (male) (%)

39 (32.2)

33 (27.3)

0.054

0.712 b

0.399

Occupation (%)

 Full-time or part-time

83 (68.6)

86 (71.1)

   

 Unemployed or retired

38 (31.4)

35 (28.9)

0.027

0.177 b

0.674

Nature of work (%)

 Mental talents labor

58 (48.0)

75 (62.0)

   

 Physical labor

39 (32.2)

28 (23.1)

   

 Both

24 (19.8)

18 (14.9)

0.141

4.836 b

0.089

Marital status (%)

 Married or remarried

101 (83.5)

89 (73.6)

   

 Divorced, widowed, or single

20 (16.5)

32 (26.4)

0.121

3.527 b

0.060

Living situation (%)

 Living alone

12 (9.9)

9 (7.4)

   

 With parents or spouse

31 (25.6)

42 (34.7)

   

 With spouse and child

9 (7.4)

17 (14.1)

   

 Other

69 (57.1)

53 (43.8)

0.166

6.646 b

0.084

Independence (%)

 Independent

115 (95.0)

112 (92.6)

   

 Need assistance

6 (5.0)

9 (7.4)

0.051

0.640 b

0.424

Childhood trauma (%)

 Yes

39 (32.2)

46 (38.0)

0.061

0.889 b

0.346

Religion (%)

 No

117 (96.7)

114 (94.2)

0.061

0.857 b

0.355

Smoking (%)

 Never

89 (73.6)

96 (79.3)

   

 Quit smoking

11 (9.0)

5 (4.1)

   

 Smoking now

21 (17.4)

20 (16.5)

0.102

2.539 c

0.281

Alcohol use (%)

 Never

89 (73.6)

84 (69.4)

   

 Quit drinking

10 (8.2)

4 (3.3)

   

 Drinking now

22 (18.2)

33 (27.3)

0.143

4.916 c

0.086

Hypertension (%)

 Yes

14 (11.6)

9 (7.4)

0.105

1.201 b

0.381

Diabetes (%)

 Yes

7 (5.8)

3 (2.5)

0.091

1.669 c

0.333

Hyperlipidemia (%)

 Yes

9 (7.4)

13 (10.7)

0.049

0.800 b

0.371

First degree of relatives (%)

 Yes

20 (16.5)

20 (16.5)

0.030

0.000 b

1.000

Duration of MDD (months)

6.0 (2.0, 12.0)

6.0 (3.0, 12.5)

 

0.198 d

0.843

BMI (%)

  

0.139

4.709 b

0.194

 Low weight

11 (9.1)

13 (10.7)

   

 Normal

59 (48.8)

73 (60.3)

   

 Overweight

41 (33.8)

29 (24.0)

   

 Obesity

10 (8.3)

6 (5.0)

   

HAMD anxiety subscale

5.8 ± 2.2

5.8 ± 1.8

0.000

−0.129 a

0.897

HAMD weight subscale

1.0 (0.0, 2.0)

0.0 (0.0, 1.0)

 

−1.757 d

0.080

HAMD cognition subscale

3.0 ± 1.9

3.0 ± 1.6

0.000

−0.073 a

0.942

HAMD retard subscale

6.8 ± 1.7

6.7 ± 1.7

0.059

−0.675 a

0.500

HAMA somatic anxiety

13.4 ± 4.1

13.3 ± 3.6

0.026

− 0.133 a

0.894

HAMA psychological anxiety

6.9 ± 4.3

7.2 ± 3.8

0.066

0.615 a

0.539

  1. G1 Group 1, patients with severe sleep disturbance, G2 Group 2, without severe sleep disturbance
  2. a Independent sample t-test; b chi-square test; c Fisher’s exact test; d nonparametric test