Table 2.

Studies with explicit definitions of dropout or completion

Study	Definition of completion
Ahmad et al., 2007	Three or more sessions of a possible eight
Cohen et al, 2004	Three or more sessions of a possible 12
Cohen et al, 2011	Completion of all eight sessions
Dawson et al, 2018	Completion of all five sessions
de Roos et al, 2011	Completion of four sessions unless asymptomatic
de Roos et al, 2017	Completion of six sessions or fewer if units of distress reduced to zero
Deblinger et al, 2011	Three or more sessions of a possible 8 or 16
Diehle et al, 2015	Eight sessions but treatment could be concluded earlier if cured
Ertl et al, 2011	Completion of all eight sessions
Foa et al., 2013	Eight or more sessions of a possible 14
Ford et al, 2012	Five or more sessions of a possible 12
Goldbeck et al, 2016	Eight or more sessions
Jaberghaderi et al, 2004	Ten or more sessions of TFCBT No minimum for EMDR
Jaberghaderi et al, 2019	Five or more sessions of a possible 12
Jensen et al, 2014	Six or more sessions
Peltonen & Kangaslampi, 2019	Seven or more sessions