Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

23 questions · 23 findings · 3 reviews · Schizophrenia

No studies found 1 · 4.3%GRADE not reported 14 · 60.9%Very low 7 · 30.4%Low 1 · 4.3%Moderate 0 · 0%High 0 · 0%

Withdrawal of anticholinergic medication vs continuing anticholinergic medication

Leaving the study early · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether withdrawal of anticholinergic medication changes acceptability of the treatment: leaving the study early compared with continuing anticholinergic medication (very low certainty).

1 finding from 1 review

Anticholinergic medication vs other treatments

Adverse effect: any adverse effects · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether anticholinergic medication changes adverse effect: any adverse effects compared with other treatments (very low certainty).

1 finding from 1 review

Anticholinergic medication vs other treatments

Leaving the study early · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether anticholinergic medication changes acceptability of the treatment: leaving the study early compared with other treatments (very low certainty).

1 finding from 1 review

Anticholinergic medication vs other treatments

Tardive dyskinesia: No clinically important improvement · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia

It is very uncertain whether anticholinergic medication changes tardive dyskinesia: Not improved to a clinically important extent compared with other treatments (very low certainty).

1 finding from 1 review

FLUPHENAZINE (ORAL) vs AMISULPRIDE

Adverse effects: Extrapyramidal effects ‐ concomitant anticholinergic medication ‐ short term (up to 12 weeks) Participants requiring concomitant anticholinergic medication · patients with schizophrenia

It is very uncertain whether FLUPHENAZINE (ORAL) changes adverse effects: Extrapyramidal effects ‐ concomitant… compared with AMISULPRIDE (very low certainty).

1 finding from 1 review

FLUPENTHIXOL DECANOATE vs other depot antipsychotic drugs

Adverse effects: general ‐ movement disorders ‐ requiring anticholinergic medication ‐ short/medium term Numbers requiring anticholinergic medication · patients with schizophrenia or related psychoses

FLUPENTHIXOL DECANOATE showed no clear difference in adverse effects: general ‐ movement disorders ‐ requiring… compared with OTHER DEPOT ANTIPSYCHOTICS (low certainty).

1 finding from 1 review