What do systematic reviews say?

Any early psychological intervention vs inactive control (usual care care, attention control, waitlist)

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  no estimate extracted
  6 studies · 945 participants
  Low

Any early psychological intervention vs active control

Any early psychological intervention may leads to higher dropouts from treatment compared with active control condition (low certainty).

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  RR 1.61 [1.11, 2.34]
  2 studies · 425 participants
  Low

Any early psychological intervention vs active control

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  no estimate extracted
  4 studies · 465 participants
  Low