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. 2013 Dec 13;2013(12):CD003388. doi: 10.1002/14651858.CD003388.pub4

Nijdam 2012.

Methods Randomised controlled trial
Participants 140 adults with PTSD after a variety of different traumas (79 women, 61 men)
Interventions Brief ecclectic psychotherapy (n = 70) or EMDR (n = 70)
Outcomes IES‐R, SI‐PTSD, HADS depression, HADS anxiety
Notes Experienced therapists delivered therapy. It is unclear whether or not treatment adherence was assessed.
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Comment: The method of random sequence generation was not reported.
Allocation concealment (selection bias) Low risk A method of central allocation was employed, whereby a psychologist unassociated with the rest of the study used a computer programme.
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Comment: ITT analyses were performed. Reasons for treatment drop‐out are fully reported, and unlikely to have caused bias. Missing data were imputed using appropriate methods. 28 individuals dropped out of EMDR and 22 from BEP.
Selective reporting (reporting bias) Low risk Comment: All specified outcomes were reported.
Other bias Low risk Comment: The issue of researcher allegiance cannot be ruled out. Treatment adherence was not monitored.
Blinding of participants and personnel (performance bias) 
 All outcomes High risk Comment: Participants were aware of their allocation.
Blinding of outcome assessment (detection bias) 
 All outcomes Low risk Quote: "To ensure masking of assessors, one psychologist who had no other engagement in the study, had access to the computer program, kept a log file of all random assignments and assigned the patients to the therapists."