27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
Early identification of individuals at increased risk of mild cognitive impairment (MCI), a pre-dementia state, can provide a critical window for prompt intervention to prevent or reverse disease progression. 5 key findings →
Design: longitudinal study Participants: 87 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
After adjusting for potential confounders, multivariable logistic regression models revealed that the prevalence of dementia was significantly higher in individuals with chronic pain than in those without. 3 key findings →
Design: cross-sectional Participants: 1,096 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
A covariate-adjusted linear mixed model for the intention-to-treat sample (N = 353; mean age = 69.7) revealed a significant positive change in dementia literacy at 6 months (standardized change = 0.246; p = 0.012) and a significant improvement in self-efficacy at 12 months (standardized change = 0.157; p = 0.008). 5 key findings →
Design: longitudinal study Participants: 353 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Within 365 days, 5.2% (N = 10709) of individuals had a delirium or dementia-related hospitalization. 5 key findings →
Participants: 207,343 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
This study aimed to examine the associations between nursing home (NH) quality and prevalence of newly admitted NH residents with Alzheimer's disease and related dementias (ADRD), and to assess the extent to which market-level wages for certified nursing assistants (CNAs) and state Medicaid behavioral and mental health add-on policy may influence such associations. 4 key findings →
Design: cohort study Participants: 2,777 Evidence: moderate
Full summary, score breakdown and related studies → Original source
The characteristics of dementia relating to excessive alcohol use have received increased research interest in recent times. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Symptoms of memory loss are caused by a range of cognitive abilities or a general cognitive decline, and not just memory. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The prevalence of severe dementia in the United States is about 1.3 million cases, of which at least 50 to 60% are of the Alzheimer type. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Substantial heterogeneity in the design of included studies limits the ability to prognosticate for individual patients. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The four IADL score could be incorporated into the screening procedure for dementia in elderly community dwellers. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Neuropsychiatric symptoms (NPS) are common in Alzheimer disease (AD) and vascular dementia (VaD), and are distressful to patients and caregivers. 2 key findings →
Participants: 180 Evidence: low
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Nutritional care and support should be an integral part of dementia management. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The QDRS provides a rapid method to determine study eligibility; stage patients in clinical practice; and improve case ascertainment in population studies. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Prevalence of cognitive impairment and dementia appear not to vary widely across the centres examined in this study, which provides stable estimates by age and sex for AGECAT O3 and above, and norms for MMSE. 2 key findings →
Participants: 550,000 Evidence: low
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Algorithmic diagnoses provide a cost-effective way to conduct dementia research. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
We describe the history, development, and success of the recruitment and screening procedures used by researchers at the University of California, Davis Alzheimer's Disease Center (UCD ADC) to facilitate minority enrollment in research. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Prevalence, 3-year incidence, and types of dementia are comparable in Black and White elderly in the Piedmont area of North Carolina. 3 key findings →
Participants: 4,136 Evidence: low
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Our data support the use of population-based cutpoints over standard cutoff scores, in that the global scale at the conventional cutoff was less sensitive than the battery at the same percentile, and because adequate norms do not exist for tests such as those in the battery. 1 key finding →
Participants: 1,367 Evidence: low
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Design identification of relevant items, pre-testing of items and refinement of administrative procedures and scoring in four successive groups of 30 subjects each, pilot testing in a group of 100 subjects comparable to those for whom the measure is intended, administration to a representative sample of 387 people aged 55 and older, and assessment of the reliability of the final measure. 2 key findings →
Participants: 30 Evidence: low
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Understanding variability in conceptions of dementia in multiethnic populations is important to improve care and guide research. 2 key findings →
Design: cross-sectional Evidence: low
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A stratified random sample of 83 black and 81 white community residents aged 65 years and older in a five-county area in the Piedmont region of North Carolina was evaluated for dementia, using the Diagnostic and Statistical Manual of Mental Disorders, Third Edition, and the National Institute of Neurological Disorders and Stroke--Alzheimer's Disease and Related Disorders Association criteria. 5 key findings →
Participants: 164 Evidence: low
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In 2017, a total of 261,914 deaths attributable to dementia as an underlying cause of death were reported in the United States. 4 key findings →
Participants: 261,914 Evidence: low
Full summary, score breakdown and related studies → Original source
Data from studies of dementia prevalence between 1945 to 1985 were analyzed statistically. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
These Canadian estimates of the prevalence of dementia fall toward the upper end of the ranges in other studies, whereas the estimates for Alzheimer's disease fall in the middle of the ranges. 2 key findings →
Participants: 9,008 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This review should serve as a compendium of updated information on VaD and provide guidance in terms of newer diagnostic and potential therapeutic approaches. 2 key findings →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
10 of the 1,233 studies in this tag, picked by a fixed rule (a hash of each study's address), not by score or date; each page of this list shows a different 10. The same 10 appear here every time.
Free full text links and the Full text may need a subscription label come from Unpaywall, Europe PMC and OpenAlex records of free copies, checked 10 Oct 2026. A study with neither is unknown, not paywalled. Show only studies that are free to read
This is alzhub's own score. It is not an official metric, not an impact factor, and no journal, publisher or ranking body endorses it. We built it so that a reader who is not a scientist can tell a landmark trial from a conference abstract without having to already know the difference. Every point comes from one of 20 components, all of them printed on the study itself, so you can disagree with our arithmetic rather than having to trust the total.
Journals are placed in ordered tiers, never given a numeric impact factor — we could not verify current impact factors from a source we control, and an invented one would be worse than none. Tier 1 is the top-tier general journals (NEJM, The Lancet, JAMA, Nature, Science, Nature Medicine); tier 2 is the leading specialty journals; tier 3 is every other peer-reviewed journal. A separate part scores how much the journal's own papers are cited, which tells the tier-3 journals apart.
Two rules we don't bend. First, we never fill in a missing value: if a record does not state a sample size or a design, that component scores zero, and if we simply have no data for a part, such as a citation count, that part is left out and the study is scored on the parts we could check. The study card says which. Second, anything that is not a peer-reviewed article is capped at 16/100 and carries a warning chip — so a conference abstract or a company press release can never outrank a peer-reviewed paper, no matter how good it looks.
We rank a rigorous null result — a good trial showing that something does not work — above an early positive finding. Someone deciding whether to buy a supplement is served by that, and the rigour is already counted by the design and journal components.
The score is computed from the published data alone and is reproducible: the same file always yields the same numbers.
See the whole rubric drawn out → — four charts covering all 27,780 studies: how the scores are spread and where the cap bites, which of the 20 components the library is strong and weak on, which subjects rest on stronger evidence, and what kinds of study each subject is actually built from.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,780 records, built mostly from automated pulls of Europe PMC (61.1% of the library) and OpenAlex (18.3%), plus smaller pulls from PubMed, Crossref and medRxiv. If a study, a drug, or a finding isn't here, that is not evidence it doesn't exist in the literature — it may simply not have been pulled in yet.
1,034 records (3.7% of the library) are not peer-reviewed — 962 of those are preprints posted before any journal review, and the rest are conference abstracts, regulatory notices and reports. Every study card on this page states its status plainly, and the score above is capped for anything that isn't a peer-reviewed article.
See the full, machine-readable breakdown of this library's coverage →