Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

285 questions · 290 findings · 75 reviews · Headline outcomes only

No studies found 81 · 27.9%GRADE not reported 18 · 6.2%Very low 91 · 31.4%Low 62 · 21.4%Moderate 32 · 11%High 6 · 2.1%

PERPHENAZINE vs antipsychotics

Adverse events: extrapyramidal adverse effects ‐ dystonia ‐ short term · patients with schizophrenia

It is very uncertain whether PERPHENAZINE changes adverse events: extrapyramidal adverse effects dystonia ‐ short term compared with ANY ANTIPSYCHOTICS (very low certainty).

1 finding from 1 review

PERPHENAZINE vs antipsychotics

Service use and hospitalisation: admission ‐ not reported · patients with schizophrenia

The review found no eligible studies for this question.

1 finding from 1 review

PERPHENAZINE vs antipsychotics

Global state: Change over time ‐ no better or deterioration ‐ short and medium term as defined in each study · patients with schizophrenia

It is very uncertain whether PERPHENAZINE changes global state: Change over time ‐ no better or deterioration ‐ short… compared with ANY ANTIPSYCHOTICS (very low certainty).

1 finding from 1 review

PERPHENAZINE vs antipsychotics

Mental state: State ‐ 'no effect' BPRS score reduction · patients with schizophrenia

It is very uncertain whether PERPHENAZINE changes mental state: State ‐ 'no effect' BPRS score reduction compared with ANY ANTIPSYCHOTICS (very low certainty).

1 finding from 1 review