Table 1.
Characteristics of the included studies.
| Study name | N NET | Age | Male participants (%) | Treatment dose | Professionals | Outcome | Language | Migration | Dropout NET | Control |
|---|---|---|---|---|---|---|---|---|---|---|
| Alghamdi et al. 2015 | 17 | 28.7 | 100.00 | 360 | 1 | SR* | 1 | 0 | 0.00 | WLC* |
| Al-Hadethe et al. 2015 | 20 | 17.5 | 100.00 | 300 | 1 | SR | 1 | 0 | 0.05 | EFT* |
| Bichescu et al. 2007 | 9 | 68.9 | 100.00 | 600 | 1 | DI* | 1 | 0 | 0.00 | PED* |
| Ertl et al. 2011 | 29 | 18.66 | 44.8 | 840 | 0 | DI | 1 | 0 | 10.34 | Catch-up* |
| Hensel-Dittmann et al. 2011 | 15 | 36.4 | 57.14 | 900 | 1 | DI | 0 | 1 | 20.00 | SIT* |
| Hijazi et al. 2014 | 41 | 47.6 | 36.59 | 225 | 1 | SR | 1 | 1 | 4.88 | WLC |
| Jacob et al. 2014 | 38 | 40.0 | 10.53 | 960 | 0 | DI | 1 | 0 | 2.63 | WLC |
| Morath et al. 2014a | 17 | 27.29 | 58.82 | 1080 | 1 | DI | 0 | 1 | 0,00 | WLC |
| Morath et al. 2014b | 19 | 28.7 | 67.65 | 1080 | 1 | DI | 0 | 1 | 21.05 | WLC |
| Neuner et al. 2004 | 17 | 31.9 | 41.18 | 420 | 1 | SR | 0 | 0 | 5.88 | SC* |
| Neuner et al. 2008 | 111 | 34.4 | 49.55 | 540 | 1 | SR | 1 | 0 | 3.6 | TC* |
| Neuner et al. 2010 | 16 | 31.6 | 68.75 | 1055 | 1 | SR | 0 | 1 | 12.5 | TAU |
| Schaal et al. 2009 | 12 | 19.42 | 38.46 | 540 | 1 | DI | 0 | 0 | 0.00 | IPT* |
| Stenmark et al. 2013 | 51 | 34.51 | 66.67 | 900 | 1 | DI | 0 | 1 | 25.49 | TAU |
| Zang et al. 2013 | 11 | 56.64 | 22.72 | 360 | 1 | SR | 1 | 0 | 0.00 | WLC |
| Zang et al. 2014, NET* 2014 | 10 | 53.5 | 6.67 | 300 | 1 | SR | 1 | 0 | 0.00 | WLC |
| Zang et al. 2014, NET-R* 2014 | 10 | 56.5 | 6.67 | 270 | 1 | SR | 1 | 0 | 0.00 | WLC |
*Catch-up, academic catch-up programme; DI, diagnostic interview; EFT, emotional freedom techniques; IPT, interpersonal psychotherapy; NET, narrative exposure therapy; NET-R, NET – revised; PED, psychoeducation; TC, Trauma Counselling; SC, supportive counselling; SIT, stress inoculation training; SR, self-report; TAU, treatment as usual; WLC, waiting-list conditions.