Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

395 questions · 404 findings · 37 reviews · Headline outcomes only

No studies found 83 · 20.5%GRADE not reported 41 · 10.1%Very low 127 · 31.4%Low 115 · 28.5%Moderate 38 · 9.4%High 0 · 0%

Internet‐based cognitive and behavioural therapy (I‐C/BT) vs WAIT LIST

Diagnosis of PTSD after treatment · adults aged ≥ 16 years with PTSD

It is very uncertain whether internet‐based cognitive and behavioural therapy (I‐C/BT) changes diagnosis of PTSD after treatment compared with wait list (very low certainty).

1 finding from 1 review

Internet‐based cognitive and behavioural therapy (I‐C/BT) vs I‐non‐C/BT

Leaving the study early · adults aged ≥ 16 years with PTSD

It is very uncertain whether internet‐based cognitive and behavioural therapy (I‐C/BT) changes dropouts compared with I‐non‐C/BT (very low certainty).

1 finding from 1 review

Internet‐based cognitive and behavioural therapy (I‐C/BT) vs face‐to‐face non‐CBT

Leaving the study early · adults aged ≥ 16 years with PTSD

It is very uncertain whether internet‐based cognitive and behavioural therapy (I‐C/BT) changes dropouts compared with face‐to‐face non‐CBT (very low certainty).

1 finding from 1 review