What do systematic reviews say?

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

It is very uncertain whether any early psychological intervention changes PTSD diagnosis: post‐treatment compared with waiting list/usual care (very low certainty).

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  RR 1.06 [0.85, 1.32]
  5 studies · 556 participants
  Very 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
  2 studies · 409 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
  2 studies · 414 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
  1 study · 239 participants
  Low

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

Any early psychological intervention may leads to lower PTSD diagnosis: 3–6 months compared with waiting list/usual care (low certainty).

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  RR 0.62 [0.41, 0.93]
  5 studies · 758 participants
  Low
• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  RR 0.94 [0.2, 4.49]
  1 study · 132 participants
  Very low

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

Any early psychological intervention showed no clear difference in dropouts from treatment compared with waiting list/usual care (low certainty).

• Multiple session early psychological interventions for the prevention of post‐traumatic stress disorder 2019 · Cochrane Headline outcomes only
  RR 1.34 [0.91, 1.95]
  11 studies · 1154 participants
  Low

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
  15 studies · 1921 participants
  Low

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
  7 studies · 1009 participants
  Low

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

Any quality improvement intervention vs usual care

• Interventions to increase attendance for diabetic retinopathy screening 2018 · Cochrane Headline outcomes only
  no estimate extracted
  56 studies · 329164 participants
  Low

Any quality improvement intervention vs usual care

The review found no eligible studies for this question.

• Interventions to increase attendance for diabetic retinopathy screening 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Any quality improvement intervention vs usual care

• Interventions to increase attendance for diabetic retinopathy screening 2018 · Cochrane Headline outcomes only
  no estimate extracted
  13 studies · 85 participants
  Low

Any quality improvement intervention vs usual care

• Interventions to increase attendance for diabetic retinopathy screening 2018 · Cochrane Headline outcomes only
  no estimate extracted
  10 studies · 85 participants
  Low

Culturally adapted health literacy skills building course vs no/unrelated health literacy intervention

• Interventions for improving health literacy in migrants 2023 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 229 participants
  Low

Culturally adapted health literacy skills building course vs no/unrelated health literacy intervention

• Interventions for improving health literacy in migrants 2023 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 111 participants
  Low

Culturally and literacy adapted audio‐/visual education without personal feedback vs no health literacy intervention

• Interventions for improving health literacy in migrants 2023 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 293 participants
  Low

Fentanyl vs placebo

Fentanyl may leads to lower pain ‐ fentanyl compared with placebo (low certainty).

• Pharmacological and non‐pharmacological interventions for reducing rocuronium bromide induced pain on injection in… 2016 · Cochrane Headline outcomes only
  RR 0.42 [0.26, 0.7]
  7 studies · 514 participants
  Low

Paracervical vs placebo

Paracervical showed no clear difference in pain during uterine intervention ‐ Risk of any pain compared with placebo (low certainty).

• Paracervical local anaesthesia for cervical dilatation and uterine intervention 2013 · Cochrane Headline outcomes only
  RR 0.85 [0.54, 1.34]
  2 studies · 242 participants
  Low