Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

996 questions · 1,049 findings · 79 reviews · Dementia and Cognitive Improvement

No studies found 240 · 22.9%GRADE not reported 31 · 3%Very low 216 · 20.6%Low 253 · 24.1%Moderate 238 · 22.7%High 71 · 6.8%

Cannabinoids vs placebo

Adverse events: psychological disorders · diagnosis of dementia (dementia in Alzheimer’s disease, vascular dementia, or mixed dementia; any severity

Comparison: cannabinoids showed no clear difference in adverse events ‐ psychiatric disorders ‐ total psychiatric disorders ( compared with placebo (low certainty).

1 finding from 1 review

Cannabinoids vs placebo

Adverse event: gastrointestinal disorders at 1‐month (with actual · diagnosis of dementia (dementia in Alzheimer’s disease, vascular dementia, or mixed dementia; any severity

Comparison: cannabinoids showed no clear difference in adverse events ‐ gastrointestinal disorders ‐ total gastrointestinal… compared with placebo (low certainty).

1 finding from 1 review

Cannabinoids vs placebo

Adverse effects: 1. General ‐ overall number of events · diagnosis of dementia (dementia in Alzheimer’s disease, vascular dementia, or mixed dementia; any severity

Comparison: cannabinoids showed no clear difference in adverse events ‐ general ‐ total general adverse events ( compared with placebo (low certainty).

1 finding from 1 review

Donepezil 10 mg/day vs placebo

Serious adverse events (excluding death) at 24 weeks · vascular dementia and other vascular cognitive impairments

Donepezil 10 mg showed no clear difference in serious adverse events (excluding death) at 24 weeks compared with placebo (moderate certainty).

1 finding from 1 review