Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

458 questions · 466 findings · 48 reviews · Schizophrenia

No studies found 87 · 18.7%GRADE not reported 82 · 17.6%Very low 153 · 32.8%Low 111 · 23.8%Moderate 19 · 4.1%High 14 · 3%

Group C cognitive behavioural therapy: cognitive behavioural therapy + placebo vs placebo or supportive treatment

Prodromal symptoms: transition to psychosis Endpoint data (events) · people in the prodromal stage of psychosis

It is very uncertain whether group C cognitive behavioural therapy: cognitive behavioural therapy… changes prodromal symptoms: transition to psychosis Endpoint data (events) compared with supportive therapy + placebo (very low certainty).

1 finding from 1 review

Group C cognitive behavioural therapy: cognitive behavioural therapy + placebo vs placebo or supportive treatment

Adverse effects: specific ‐ doctors' assessment of adverse effects UKU (events) Medium‐term · people in the prodromal stage of psychosis

It is very uncertain whether group C cognitive behavioural therapy: cognitive behavioural therapy… changes adverse effects: specific ‐ doctors' assessment of adverse effects… compared with supportive therapy + placebo (very low certainty).

1 finding from 1 review

Group C cognitive behavioural therapy: cognitive behavioural therapy + placebo vs placebo or supportive treatment

Satisfaction with treatment: leaving the study early Endpoint data (events) · people in the prodromal stage of psychosis

It is very uncertain whether group C cognitive behavioural therapy: cognitive behavioural therapy… changes satisfaction with treatment: leaving the study early Endpoint data… compared with supportive therapy + placebo (very low certainty).

1 finding from 1 review

Zuclopenthixol dihydrochloride vs placebo

Leaving the study early · patients with schizophrenia

It is very uncertain whether zuclopenthixol dihydrochloride changes leaving the study early (any reason) compared with placebo (very low certainty).

2 findings from 2 reviews · compare the 2 reviews

FLUPHENAZINE (ORAL) vs placebo

Global state: Not improved or worsened ‐ medium term Dichotomised Montgomery‐Asberg Depression Rating Scale (MDRS) · patients with schizophrenia

It is very uncertain whether ORAL FLUPHENAZINE changes global state: Not improved or worsened ‐ medium termDichotomised… compared with PLACEBO (very low certainty).

1 finding from 1 review

FLUPHENAZINE (ORAL) vs placebo

Adverse effects: Death ‐ long termOccurrences of death · patients with schizophrenia

ORAL FLUPHENAZINE showed no clear difference in adverse effects: Death ‐ long termOccurrences of death compared with PLACEBO (low certainty).

1 finding from 1 review

FLUPHENAZINE (ORAL) vs placebo

Adverse effects: 2. Extrapyramidal ‐ akathisia · patients with schizophrenia

ORAL FLUPHENAZINE probably leads to higher adverse effects: Extrapyramidal effects (akathisia) ‐ short… compared with PLACEBO (moderate certainty).

1 finding from 1 review

FLUPHENAZINE (ORAL) vs placebo

Adverse effects: extrapyramidal adverse effectsParkinsonism (rigidity) short term (< 3 months) Clinical diagnoses · patients with schizophrenia

ORAL FLUPHENAZINE probably leads to higher adverse effects: Extrapyramidal effects (rigidity) ‐ short… compared with PLACEBO (moderate certainty).

1 finding from 1 review

RISPERIDONE vs placebo

Mental state: No 20% response (as defined by PANSS/BPRS total change) · patients with schizophrenia

It is very uncertain whether RISPERIDONE changes mental state: no clinically significant response in psychotic… compared with PLACEBO (very low certainty).

1 finding from 1 review

RISPERIDONE vs placebo

Behaviour: Leaving the study early (short‐term) · patients with schizophrenia

RISPERIDONE may leads to lower leaving the study early ‐ short term (up to 12 weeks) ‐ any reason compared with PLACEBO (low certainty).

1 finding from 1 review

RISPERIDONE vs placebo

Global state: 2. no significant clinical improvement ‐ CGI, short term (up to 12 weeks) · patients with schizophrenia

It is very uncertain whether RISPERIDONE changes global state: 2. no significant clinical improvement ‐ CGI, short… compared with PLACEBO (very low certainty).

1 finding from 1 review

RISPERIDONE vs placebo

Adverse effects: 1a. extrapyramidal ‐ various effects ‐ short term (up to 12 weeks) ‐ general ‐ any significant EPS · patients with schizophrenia

RISPERIDONE may leads to higher adverse effects: 1a. extrapyramidal ‐ various effects ‐ short term… compared with PLACEBO (low certainty).

1 finding from 1 review

CLOZAPINE + RISPERIDONE vs PLACEBO + CLOZAPINE

Mental state: No 20% response (as defined by PANSS/BPRS total change) · patients with schizophrenia

RISPERIDONE + CLOZAPINE showed no clear difference in mental state: no clinically significant response in psychotic… compared with PLACEBO + CLOZAPINE (low certainty).

1 finding from 1 review

CLOZAPINE + RISPERIDONE vs PLACEBO + CLOZAPINE

Global state: 2. no significant clinical improvement ‐ CGI, short term (up to 12 weeks) · patients with schizophrenia

RISPERIDONE + CLOZAPINE showed no clear difference in global state: no significant clinical improvement ‐ CGI short term compared with PLACEBO + CLOZAPINE (low certainty).

1 finding from 1 review