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Table 2 Risk of bias in included studies

From: The effect of CBT and its modifications for relapse prevention in major depressive disorder: a systematic review and meta-analysis

Study ID

Random sequence generation

Allocation concealment

Blinding of participants and personnel

Blinding of outcome assessment

Incomplete outcome data

Selective reporting

Other sources of bias

Bockting, 2005 [26]

L

L

H

L

U

H

L

Bockting,2009 [44]

L

L

H

L

U

H

L

Bondolfi,2010 [45]

L

L

H

L

L

L

L

Fava,1994 [46]

U

U

H

L

L

L

L

Fava,1996 [47]

U

U

H

L

L

L

L

Fava,1998 a [48]

U

U

H

L

L

L

L

Fava,1998 b [49]

U

U

H

L

H

L

L

Fava,2004 [50]

U

U

H

L

L

L

L

Godfrin,2010 [51]

L

L

H

H

U

L

L

Hollandare,2013 [52]

L

U

H

U

L

L

L

Kuyken,2008 [53]

L

L

H

L

L

L

L

Kuyken,2015 [27]

L

L

H

L

L

L

L

Ma and Teasdale,2004 [32]

L

L

H

L

L

H

L

Paykel,1999 [54]

L

L

H

L

U

H

L

Segal,2010 [55]

L

L

H

L

U

H

L

Stangier,2013 [56]

L

U

H

H

H

H

L

Teasdale,2000 [28]

L

L

H

L

L

L

L

Teismann,2014 [57]

L

L

H

H

L

L

L

Wilkinson,2009 [58]

L

L

H

L

U

L

L

Williams,2014 [59]

L

L

H

H

L

L

L

  1. Note: H high risk, L low risk, U unclear