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. 2019 Aug 8;2019(8):CD006869. doi: 10.1002/14651858.CD006869.pub3

Andre 1997.

Methods Design: RCT
Participants Setting: community
Type of trauma exposure: victims of aggression
Inclusion criteria: bus drivers who were victims of aggression
Exclusion criteria: not reported
Sample size: 132 randomised: 65 to intervention, 67 to control
Mean age: 35.2 (SD not reported) years
Gender: not reported
Ethnicity: not reported
Country: France
Interventions Group 1:
CBT intervention with 1–6 sessions, 45–60 min each. Mean 2.3 sessions per participant
Group 2:
Standard care (medical/social care provided by company)
Outcomes PTSD: IES
Other: HAD anxiety; number of days off work
Follow‐up: 6 months' postintervention
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Not reported
Allocation concealment (selection bias) Unclear risk Not reported
Blinding of outcome assessment (detection bias) 
 All outcomes Unclear risk Not reported
Incomplete outcome data (attrition bias) 
 All outcomes High risk High attrition: intervention (40%), control (33%)
Adherence to intervention not reported
Selective reporting (reporting bias) High risk No protocol identified. The study authors reported no statistically significant differences between intervention and control groups, which meant that it was not possible to include this study in meta‐analyses. This has the potential to lead to an overestimate of effectiveness for those outcomes.
Other bias Low risk Appeared free from other sources of bias.