Evidence map›Paper›PMID 18703981›Full record

SynthesisAlzheimer disease and associated disorders

Cardiovascular risk factors and incident Alzheimer disease: a systematic review of the literature.

Christianna Purnell, Sujuan Gao, Christopher M Callahan, Hugh C Hendrie

Abstract readSystematic Review
In one paragraph

Synthesis in Alzheimer disease and associated disorders. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 5 pooled it
12.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

90 citing papers in PubMed, 5 syntheses or guidelines pooled it, 182 citations in OpenAlex.

  1. Pooled it
  2. The efficacy of statins in the treatment of Alzheimer's disease: a meta-analysis of randomized controlled trial.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2020
    Pooled it
  3. Incidence of Dementia and Alzheimer Disease Over Time: A Meta-Analysis.Journal of the American Geriatrics Society · 2019
    Pooled it
  4. Pooled it
  5. Guideline
  6. Trial
  7. Article
  8. Review
  9. Journal of the American Heart Association · 2026
    Article
  10. Review
  11. Article
  12. Genetic variants for Alzheimer's disease and comorbid conditions.Journal of Alzheimer's disease : JAD · 2024
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article

30 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Christianna PurnellRegenstrief Institute Inc, Indiana University School of Medicine, Indianapolis, IN, USA.
Sujuan Gao
Christopher M Callahan
Hugh C Hendrie
Regenstrief Institute · USIndiana University · US

Funding

Research Education ComponentP30AG010133 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI SAYKIN, ANDREW J · 1991 to 2020
$37.3M
INDIANAPOLIS/IBADAN DEMENTIA PROJECTR01AG009956 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI HALL, KATHLEEN S · 1991 to 2010
$14.0M
TRANSLATION RESEARCH ON CHRONIC DISEASE SELF-MANAGEMENTP30AG024967 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI CALLAHAN, CHRISTOPHER M · 2004 to 2013
$3.2M
Patient-Oriented Research to Improve Geriatric Care-K24K24AG024078 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI CALLAHAN, CHRISTOPHER M · 2004 to 2013
$1.4M
NIA NIH HHS K24 AG024078NIA NIH HHS P30 AG010133NIA NIH HHS P30 AG024967NIA NIH HHS P30 AG10133NIA NIH HHS R01 AG009956
6 · The paper itself

Abstract

objectiveThe purpose of this study was to conduct a systematic review of the literature of cardiovascular factors pertaining to incident Alzheimer disease (AD).

methodsA systematic literature review was conducted of all studies of cardiovascular risk factors for incident AD listed in PubMed in English from 2000 to 2007. Risk factors included hypertension, diabetes, exercise, alcohol intake, smoking, B complex vitamins, homocysteine, stroke, atrial fibrillation, apolipoprotein E (APOE), lipids, and diet. Inclusion criteria consisted of diagnoses of incident AD and longitudinal studies with cohorts of 500 or more.

resultsIndividual clinically defined risk factors such as hypertension and diabetes were not significantly associated with increased risk for AD. The strength of the association for hypertension could be considerably strengthened by changing criteria such as midlife measurements or using higher cutoffs for systolic blood pressure. APOE epsilon4 was the most consistent risk factor. Interactions between risk factors modify risk particularly for hypertension and diabetes. Interactions modifying risk were also found for exercise and physical function, APOE epsilon4, diabetes, and cholesterol.

conclusionsIn this review, the evidence that single clinically defined cardiovascular risk factors are significantly associated with incident AD is inconsistent at best. The strength of the association of cardiovascular risk factors and AD can be influenced greatly by changing the parameters of measurement of risk factors and by identifying interactions between the factors.

Indexed as

Alzheimer DiseaseCardiovascular DiseasesHumansRisk Factors

Identifiers

PMID18703981
PMCPMC3689425
OpenAlexW2048918162

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.