Study	Reason for exclusion
Berger 2007	Not screened for trauma
Bolton 2007	Screened for depression but not trauma
Burke 1988	Not randomised; matched control
Catani 2009	All participants had to meet criteria for PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Chen 2014	All participants had scores > 18 on the CRIES‐13, which was cited as 81% sensitivity and 77% specificity for PTSD ‐ to be reviewed in the update of Gillies 2012
Cohen 2004	All participants had to meet criteria for PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Cooley‐Strickland 2011	Exposure to trauma was not an inclusion criterion
Dybdahl 2001	Intervention for mothers only
Ehntholt 2005	Not randomised
Ensink 2004	No data reported, and study authors could not be contacted
Ertl 2011	All participants had to meet criteria for PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Gelkopf 2009	Exposure to trauma was not an inclusion criterion
Gellman 2001	Not randomised; matched control
Goenjian 1997	Pre‐post study
Graham‐Bermann 2013	Partcipants were sequentially allocated to groups
Hardin 2002	Not screened for trauma
Jacob 2014	All participants had to meet criteria for PTSD; therefore, this study will be reviewed in the update of Gillies 2012
Jeffres 2004	Not randomised
Jensen 2014	Included participants had scores ≥ 15 on the Child PTSD Symptom Scale, which is considered diagnostic of PTSD ‐ to be included in the update of Gillies 2012
Jordans 2010	Exposure to trauma was not an inclusion criterion
Kassam‐Adams 2011	Randomised trial of stepped care versus usual care
Kataoka 2003	Data for randomised controls not reported and could not be obtained
Kenardy 2008	Case control study
King 2000	All participants had to be diagnosed with PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Krueger 2013	Children were alternately allocated to trauma‐focused interpersonal therapy or CBT
Lyshak‐Stelzer 2007	Interim analysis of the data (30/55 not LTFU – 86 randomised in total with 31 LTFU at this report)
McWhirter 2011	Did not report included outcomes
Murray 2015	Mean baseline trauma symptom item scores (PTSD‐RI 38‐item trauma symptom scale) were 1.88 in the TF‐CBT group and 1.75 in the TAU group ‐ to be reviewed in the update of Gillies 2012
Pfeffer 2002	Families were alternately allocated; loss to follow‐up was 75% in the no treatment group
Phipps 2012	Intervention was not a psychological therapy
Rosner 2014	Ongoing study of cognitive processing therapy versus usual care for treatment of adolescents and young adults with PTSD following abuse. To be reviewed in the update of Gillies 2012
Rubin 2001	Not screened for trauma
Ruf 2010	All participants had to meet criteria for PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Ruf 2012	Study of Lifeline‐NET, short‐term narrative exposure therapy for refugees and asylum Seekers aged 16 to 60 years with PTSD. This will be reviewed in the update of Gillies 2012
Saxe 2012	Only 1 of 10 participants in the usual care group were followed up
Schaal 2009	Average age of participants was 19 years
Schauer 2008	All participants had to meet criteria for PTSD to be included in this study; therefore, it was reviewed in Gillies 2012
Scheeringa 2011	Less than 50% of the intervention group were randomised
Shelby 1995	No comparison group
Shooshtary 2008	Not randomised
Soltanifar 2012	Study of attachment‐based play therapy compared to supportive therapy for children with developmental trauma disorder. This will be reviewed in the update of Gillies 2012
Stronach 2012	Both interventions working with mother, although directed at the parent/child interaction
Thabet 2005	Not randomised
Wang 2011	Not screened for trauma; case control study
Wolmer 2011a	Not randomised
Wolmer 2011b	Not randomised

LTFU: Loss to follow‐up