Cochrane · systematic review · CD013337

Pharmacological interventions for prevention of weight gain in people with schizophrenia

Agarwal, SM, Stogios, N, Ahsan, ZA, et al. · Cochrane Database of Systematic Reviews · 2022 · Cochrane Library

SchizophreniaAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
28
current version
GRADE rated
15
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 13 · 46.4%Very low 4 · 14.3%Low 11 · 39.3%Moderate 0 · 0%High 0 · 0%

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.

Questions and results

Metformin compared to placebo or no treatment for prevention of weight gain in people with schizophrenia

Population: people with schizophrenia with antipsychotic‐induced weight gain
7 questions
OutcomeEffectEvidenceStatus / GRADE
Weight: clinically important change in weight (kg)
Metformin vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in weight (kg)
Metformin vs placebo or no treatment
no estimate extracted4 studies · 131 participantsLow
Downgraded: risk of bias, imprecision
Weight: clinically important change in BMI (kg/m2)
Metformin vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Weight Average endpoint/change in BMI (kg/m2)
Metformin vs placebo or no treatment
no estimate extracted5 studies · 227 participantsLow
Downgraded: risk of bias, inconsistency
Leaving the study early: for any reason
Metformin vs placebo or no treatment
RR 1.02 [0.25, 4.13]4 studies · 137 participantsVery low
Downgraded: imprecision, inconsistency
Compliance with treatment
Metformin vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Reports of nausea
Metformin vs placebo or no treatment
RR 2.38 [0.28, 19.95]2 studies · 69 participantsLow
Downgraded: imprecision

H2 antagonists compared to placebo for prevention of weight gain in people with schizophrenia

Population: people with schizophrenia with antipsychotic‐induced weight gain
7 questions
OutcomeEffectEvidenceStatus / GRADE
Weight: clinically important change in weight (kg)
H2 antagonists vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in body weight (kg)
H2 antagonists vs placebo
no estimate extracted3 studies · 248 participantsLow
Downgraded: risk of bias
Weight: clinically important change in BMI (kg/m2)
H2 antagonists vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in BMI (kg/m2)
H2 antagonists vs placebo
no estimate extracted2 studies · 79 participantsVery low
Downgraded: risk of bias
Leaving the study early: for any reason
H2 antagonists vs placebo
RR 1.07 [0.72, 1.57]2 studies · 189 participantsLow
Downgraded: risk of bias
Compliance with treatment
H2 antagonists vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Reports of nausea
H2 antagonists vs placebo
RR 1.13 [0.34, 3.68]1 study · 175 participantsLow
Downgraded: risk of bias

Monoamine modulators compared to placebo for prevention of weight gain in people with schizophrenia

Population: people with schizophrenia with antipsychotic‐induced weight gain
7 questions
OutcomeEffectEvidenceStatus / GRADE
Weight: clinically important change in weight (kg)
Monoamine modulators vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in body weight (kg)
Monoamine modulators vs placebo
no estimate extracted3 studies · 103 participantsLow
Weight: clinically important change in BMI (kg/m2)
Monoamine modulators vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in BMI (kg/m2)
Monoamine modulators vs placebo
no estimate extracted3 studies · 103 participantsLow
Leaving the study early: for any reason
Monoamine modulators vs placebo
RR 1.05 [0.56, 1.94]3 studies · 115 participantsLow
Compliance with treatment
Monoamine modulators vs placebo
no estimate extracted0 studies · 0 participantsUngraded
Reports of nausea
Monoamine modulators vs placebo
no estimate extracted0 studies · 0 participantsUngraded

Topiramate compared to placebo or no treatment for prevention of weight gain in people with schizophrenia

Population: people with schizophrenia with antipsychotic‐induced weight gain
7 questions
OutcomeEffectEvidenceStatus / GRADE
Weight: clinically important change in weight (kg)
Topiramate vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in weight (kg)
Topiramate vs placebo or no treatment
no estimate extracted3 studies · 168 participantsVery low
Downgraded: risk of bias
Weight: clinically important change in BMI (kg/m2)
Topiramate vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Weight: average endpoint/change in BMI (kg/m2)
Topiramate vs placebo or no treatment
no estimate extracted2 studies · 120 participantsVery low
Downgraded: risk of bias
Leaving the study early: for any reason
Topiramate vs placebo or no treatment
RR 1.09 [0.85, 1.41]2 studies · 132 participantsLow
Downgraded: risk of bias
Compliance with treatment
Topiramate vs placebo or no treatment
no estimate extracted0 studies · 0 participantsUngraded
Reports of nausea
Topiramate vs placebo or no treatment
RR 1.2 [0.26, 5.44]2 studies · 120 participantsLow
Downgraded: risk of bias