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Home › Research › What the research found › Every row

Every row of the evidence table

One row per finding: what was tested, which way the result went, and how the study was built. The answer by area, and where the studies disagree, are on the main page.

Every row

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Area All 382 Care, carers and services 140 Medicines 85 Genes (not modifiable) 35 All modifiable factors together 27 Diet and supplements 23 Exercise and activity 21 Sleep, mood and social life 19 Hearing and vision 8 Alcohol, tobacco and cannabis 6 Infection and vaccination 5 Heart and metabolic health 4 Injury, delirium and falls 4 Environment 3 Cognitive activity 2
Question Both Prevention 190 Treatment 192
Direction Any Benefit 144 Harm 105 No effect 38 Mixed 37 No direction reported 58
Design Any meta-analysis 57 randomised trial 44 phase 3 trial 15 systematic review 9 phase 2 trial 10 cohort study 136 phase 1 trial 2 cross-sectional study 31 case-control study 14 modelling study 20 regulatory decision 7 company announcement 1 coverage determination 1 None 35
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Showing 3 of 382 rows for Diagnostic criteria / biological definition of Alzheimer's. One row per study per exposure: a study that tested two different things appears twice, once for each.

Scroll the table sideways to see every column.

Research and outcomes, 3 rows. Every row links to its source.
Exposure Question Direction Outcome measured Design People Effect size, as the source reported it Source
Diagnostic criteria / biological definition of Alzheimer's Care, carers and services Treatment No direction reported
why

A criteria document. It defines Alzheimer's disease biologically and sets out staging, and reports no effect estimate.

 None measured (diagnostic criteria document) None not stated not established — criteria document; it states definitions and reports no effect estimate. Alzheimer's & Dementia 2024
✓ Peer-reviewed PMID 38934362
Diagnostic criteria / biological definition of Alzheimer's Care, carers and services Treatment No direction reported
why

An editorial. It argues that biomarker positivity alone should not define Alzheimer's disease in people without symptoms, and reports no data of its own.

 None measured (editorial) None not stated not established — editorial read in full at jpreventionalzheimer.com; pubmed carries no abstract for it and it reports no effect estimate. The Journal of Prevention of Alzheimer's Disease 2024
⚠ Editorial — not peer-reviewed research PMID 39044499
Diagnostic criteria / biological definition of Alzheimer's Care, carers and services Treatment No direction reported
why

A research framework defining Alzheimer's disease by biomarkers (the AT(N) system) for research use. It states its own intended limits and reports no effect estimate.

 None measured (research framework) None not stated not established — framework document; the abstract reports no effect estimate. Alzheimer's & Dementia 2018
✓ Peer-reviewed PMID 29653606

How this table was built, and where it is weak →