| study | age group | mean age | % female | Intervention | Specification | Control | N (IG) | N (CG) | country | sg | ac | itt |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aagaard, 2017 | 4 | 48 | 0.71 | CBT | nr | Care-As-Usual | 40 | 35 | Europe | 1 | 1 | 0 |
| Allart van Dam, 2003 | 4 | 46 | 0.62 | CBT | nr | Care-As-Usual | 61 | 41 | Europe | 0 | 0 | 0 |
| Ammerman, 2013 | 3 | 22 | 1.00 | CBT | nr | Care-As-Usual | 47 | 46 | USA | 0 | 1 | 1 |
| Ayen, 2004 | 4 | 51 | 1.00 | CBT | cbt | Wait-List | 11 | 10 | Europe | 0 | 0 | 0 |
| Beach, 1992 | 4 | 39 | 1.00 | CBT | bmt | Wait-List | 15 | 15 | USA | 0 | 0 | 0 |
| . | 4 | 39 | 1.00 | CBT | cbt | Wait-List | 15 | 15 | USA | 0 | 0 | 0 |
| Berger, 2011 | 4 | 39 | 0.70 | CBT | guided i-cbt | Wait-List | 25 | 26 | Europe | 1 | 1 | 1 |
| Bowman, 1995 | 4 | 36 | 0.63 | CBT | cognitive bibliotherapy | Wait-List | 10 | 10 | USA | 0 | 0 | 0 |
| Brown, 1984 | 4 | 36 | 0.70 | CBT | cbt group | Wait-List | 25 | 11 | USA | 0 | 0 | 0 |
| . | 4 | 36 | 0.70 | CBT | cbt individual | Wait-List | 13 | 11 | USA | 0 | 0 | 0 |
| . | 4 | 36 | 0.70 | CBT | cbt phone | Wait-List | 14 | 11 | USA | 0 | 0 | 0 |
| Buhrman, 2015 | 4 | 51 | 0.85 | CBT | nr | Wait-List | 28 | 24 | Europe | 1 | 1 | 1 |
| Burford, 2021 | 4 | 42 | 0.80 | CBT | nr | Care-As-Usual | nr | nr | Europe | 1 | 1 | 1 |
| Burroughs, 1999 | 4 | 36 | 0.79 | CBT | nr | Care-As-Usual | nr | nr | Europe | 1 | 1 | 1 |
| Buchanan, 2010 | 4 | 36 | 0.91 | CBT | nr | Care-As-Usual | nr | nr | Europe | 1 | 1 | 1 |
| Bzdok, 2001 | 4 | 42 | 0.77 | CBT | nr | Care-As-Usual | nr | nr | Europe | 1 | 1 | 1 |
| Bruckner, 2009 | 4 | 24 | 0.81 | CBT | nr | Care-As-Usual | nr | nr | Europe | 1 | 1 | 1 |