Table 3 Categorical Moderator Results for Depression Comparing MBI versus Control Groups

Funding

1.138

0.286

Unfunded

8

0.535

0.149

0.022

0.243, 0.828

3.588

< 0.001

Funded

22

0.350

0.090

0.008

0.174, 0.526

3.895

< 0.001

Method characteristics

Blinded data collection

0.249

0.618

No

13

0.355

0.117

0.014

0.125, 0.584

3.024

0.002

Yes

17

0.432

0.101

0.010

0.234, 0.630

4.269

< 0.001

Intention-to-treat

0.022

0.881

No

23

0.393

0.090

0.008

0.216, 0.570

4.351

< 0.001

Yes

7

0.420

0.159

0.025

0.108, 0.733

2.637

0.008

Concealed allocation

1.126

0.289

No

10

0.285

0.134

0.034

0.022, 0.549

2.121

0.034

Yes

20

0.462

0.099

< 0.001

0.269, 0.655

4.685

< 0.001

Baseline characteristics equal across groups

0.689

0.406

No

6

0.284

0.191

0.037

− 0.091, 0.658

1.484

0.138

Yes

14

0.477

0.132

0.017

0.217, 0.736

3.604

< 0.001

Power of sample

0.463

0.496

No

10

0.232

0.134

0.018

− 0.031, 0.496

1.728

0.084

Yes

8

0.364

0.139

0.019

0.091, 0.637

2.611

0.009

Fidelity

0.037

0.847

No

29

0.402

0.080

0.006

0.246, 0.559

5.032

< 0.001

Yes

1

0.312

0.463

0.214

− 0.595, 1.219

0.673

0.501

Intervention characteristics

MBI type

1.561

0.458

MBSR

3

0.299

0.243

0.059

− 0.178, 0.776

1.229

0.219

MBCT

2

0.740

0.292

0.085

0.168, 1.312

2.535

0.011

Adapted MBI

24

0.383

0.091

0.008

0.206, 0.561

4.226

< 0.001

Home Assignment

0.210

0.647

No

20

0.454

0.096

0.009

0.267, 0.642

4.749

< 0.001

Yes

8

0.371

0.154

0.024

0.070, 0.673

2.413

0.016

Structure MBI format

1.184

0.553

Individual

7

0.358

0.168

0.028

0.029, 0.688

2.134

0.003

Group

21

0.445

0.097

0.009

0.254, 0.636

4.574

< 0.001

Mixed (Individual + group)

2

0.116

0.299

0.089

− 0.470, 0.701

0.387

0.699

Outcome measure

Days after intervention measured

0.655

0.418

Immediate post-MBI

18

0.448

0.098

0.010

0.256, 0.640

4.573

< 0.001

Delayed follow-up

12

0.320

0.124

0.015

0.077, 0.563

2.580

0.010