Table 1 Baseline summary statistics

From: An individual participant data meta-analysis of psychological interventions for preventing depression relapse

 

N participants

%

Mean

s.d.

Total n

Range

Sex

      

Female

1,258

73

  

1,725

 

Male

467

27

    

Ethnicity

      

White

449

91

  

496

 

Non-white

47

9

    

Marital status

      

Married/cohabiting

769

45

  

1,701

 

Single/DSW

932

55

    

Employment

      

Employed

616

64

  

959

 

Non-employed

343

36

    

Presence of a comorbid psychiatric condition

      

No

481

69

  

700

 

Anxiety disorder

133

19

    

Other mental health disorder

58

8

    

Comorbid anxiety disorder and other mental health disorder

28

4

    

Sessions completed

      

Yes

624

27

  

850

 

No

226

73

    

Education level

      

No higher education

332

20

  

1,625

 

Higher education

1,303

80

    

Age

  

45.1

11

1,724

19–81

Age of onset

  

25.8

11.9

1,617

3–61

Previous episodes

  

4.8

5

1,614

1–69

One

74

5

  

1,614

1–69

Two

327

20

  

1,614

1–69

Three or more

1,213

75

  

1,614

1–69

Time in remission since last episode (months)

  

13

13.1

559

0–168

Duration last episode (months)

  

21

49

951

0–528

Previous psychological intervention

      

Yes

511

54

  

951

 

No

440

46

    

Previous medication

      

Yes

243

62

  

395

 

No

152

38

    

Comorbid physical health condition

      

Yes

203

48

  

388

 

No

185

52

    

Depressive symptoms—HAM-D

  

4.6

3.6

1,070

0–15

Depressive symptoms—BDI

  

10.9

8.7

1,008

0–50

  1. DSW, divorced/separated/widowed; HAM-D33 measured at study baseline. ‘No higher education’ indicates completed only high school or equivalent; ‘higher education’ indicates college or academic qualification.