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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

2,589 questions in 168 reviews · Schizophrenia

current versions
No studies 601 · 23.2%Ungraded 446 · 17.2%Very low 721 · 27.8%Low 505 · 19.5%Moderate 274 · 10.6%High 42 · 1.6%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Group C other: integrated treatment vs standard treatment
Satisfaction with treatment: leaving the study early Endpoint data (events) · people in the prodromal stage of psychosis
Interventions for prodromal stage of psychosis (2019) · Cochrane
RR 0.66 [0.25, 1.73]1 study · 79 participantsVery low
Intervention NR
Tardive dyskinesia: Not improved to a clinically important extent · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.83 [0.74, 0.92]3 studies · 258 participantsLow
Intervention NR
Tardive dyskinesia: Deterioration of symptoms · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.9 [0.7, 5.16]5 studies · 136 participantsVery low
Intervention NR
Adverse events · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 4.549 studies · 284 participantsVery low
Intervention NR
Mental state: Deterioration · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 2.65 [0.71, 9.86]6 studies · 121 participantsVery low
Intervention NR
Acceptability of treatment: Leaving the study early · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.47 [0.69, 3.15]6 studies · 218 participantsVery low
Intervention NR
Social confidence, social inclusion, social networks, or personalised quality of life measures · patients with antipsychotic‐induced TD
Gamma‐aminobutyric acid agonists for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Anticholinergic medication vs placebo
Tardive dyskinesia: not improved to a clinically important extent · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs other treatments
Adverse effect: any adverse effects · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.33 [0.02, 7.32]1 study · 20 participantsVery low
Anticholinergic medication vs other treatments
Acceptability of the treatment: leaving the study early · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.33 [0.02, 7.32]1 study · 20 participantsVery low
Anticholinergic medication vs other treatments
Social confidence, social inclusion, social networks, or personalised quality of life · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Tardive dyskinesia: not improved to a clinically important extent · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Tardive dyskinesia: deterioration of symptoms · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Mental state · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Adverse effects · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Acceptability of the treatment: leaving the study early · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 2.14 [0.11, 42.52]1 study · 10 participantsVery low
Withdrawal of anticholinergic medication vs continuing anticholinergic medication
Social confidence, social inclusion, social networks, or personalised quality of life · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs placebo
Tardive dyskinesia: deterioration of symptoms · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs placebo
Mental state · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs placebo
Adverse effect: any adverse effects · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs placebo
Acceptability of the treatment: leaving the study early · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs placebo
Social confidence, social inclusion, social networks, or personalised quality of life · patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs other treatments
Tardive dyskinesia: Not improved to a clinically important extent · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 4.2 [1.4, 12.58]1 study · 20 participantsVery low
Anticholinergic medication vs other treatments
Tardive dyskinesia: deterioration of symptoms · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Anticholinergic medication vs other treatments
Mental state · chronic schizophrenia patients with antipsychotic‐induced tardive dyskinesia
Anticholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted0 studies · 0 participantsUngraded
Benzodiazepines vs placebo
Tardive dyskinesia: no clinically important improvement · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.12 [0.6, 2.09]2 studies · 32 participantsVery low
Benzodiazepines vs phenobarbital (as active placebo)
Adverse effect: extrapyramidal symptoms ‐ not reported · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs phenobarbital (as active placebo)
Acceptability of the treatment (measured by participants leaving the study early) · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted1 study · 21 participantsVery low
Benzodiazepines vs phenobarbital (as active placebo)
Social confidence, social inclusion, social networks, or personalised quality of life ‐ not measured · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs placebo
Tardive dyskinesia: deterioration in symptoms · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.48 [0.22, 9.82]2 studies · 30 participantsVery low
Benzodiazepines vs placebo
Adverse effect: any adverse event · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs placebo
Adverse effect: no clinically significant extrapyramidal adverse effects · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs placebo
Acceptability of the treatment (measured by participants leaving the study early) · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 2.73 [0.15, 48.04]3 studies · 56 participantsVery low
Benzodiazepines vs placebo
Social confidence, social inclusion, social networks, or personalised quality of life ‐ not reported · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs phenobarbital (as active placebo)
Tardive dyskinesia: no clinically important improvement · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.44 [0.2, 0.96]1 study · 21 participantsVery low
Benzodiazepines vs phenobarbital (as active placebo)
Tardive dyskinesia: deterioration in symptoms ‐ not measured · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Benzodiazepines vs phenobarbital (as active placebo)
Adverse events: any · psychiatric patients (mainly schizophrenia) with antipsychotic‐induced tardive dyskinesia
Benzodiazepines for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.53 [0.97, 2.41]1 study · 21 participantsVery low
Intervention NR
Tardive dyskinesia ‐ not improved to a clinically important extent · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted2 studies · 37 participantsVery low
Intervention NR
Tardive dyskinesia ‐ deterioration · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse effects ‐ any important adverse effects · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted1 study · 20 participantsVery low
Intervention NR
Adverse effects ‐ important extrapyramidal adverse effects · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mental state ‐ deterioration · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extracted1 study · 18 participantsVery low
Intervention NR
Acceptability of treatment ‐ leaving the study early · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Social confidence, social inclusion, social networks or personalised quality of life measures ‐ no clinically significant change · people with antipsychotic‐induced tardive dyskinesia
Calcium channel blockers for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies
CHOLINERGIC DRUGS vs PLACEBO
Tardive dyskinesia: No clinically important improvement · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.89 [0.65, 1.23]4 studies · 27 participantsVery low
CHOLINERGIC DRUGS vs PLACEBO
Tardive dyskinesia: Deterioration · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.11 [0.55, 2.24]8 studies · 147 participantsLow
CHOLINERGIC DRUGS vs PLACEBO
Mental state: Deterioration · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.5 [0.1, 2.61]5 studies · 77 participantsVery low
CHOLINERGIC DRUGS vs PLACEBO
Adverse effects: Any adverse events · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 0.56 [0.15, 2.14]4 studies · 106 participantsVery low
CHOLINERGIC DRUGS vs PLACEBO
Acceptability of treatment: Leaving the study early · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
RR 1.09 [0.56, 2.1]12 studies · 288 participantsVery low
CHOLINERGIC DRUGS vs PLACEBO
Social confidence, social inclusion, social networks, or personalised quality of life ‐ not reported · people with various psychiatric disorders (mainly schizophrenia) and antipsychotic‐induced tardive dyskinesia
Cholinergic medication for antipsychotic‐induced tardive dyskinesia (2018) · Cochrane
no estimate extractedNRNo studies