28,980 Alzheimer's and dementia studies in plain English, each scored out of 100.
Included in the analysis were 48,330 participants across 46 ADRCs (mean [SD] age, 71.3 [10.5] years; 20,767 female [57%]; 4,138 Hispanic [8.6%]; 1,392 non-Hispanic Asian [2.9%]; 6,766 non-Hispanic Black [14%] individuals; and 676 individuals [1.4%] of other races. 4 key findings →
Design: cross-sectional Participants: 48,330 Evidence: low
Full summary, score breakdown and related studies → Original source
Social determinants of health, including neighborhood factors, play a key role in the health of diverse older adults. 3 key findings →
Design: longitudinal study Participants: 452 Evidence: moderate
Full summary, score breakdown and related studies → Original source
The final sample comprised 2478 individuals, of which 59 (2.4%) were Asian, 63 (2.5%) were Black, and 2356 (95.1%) were White. 5 key findings →
Design: cross-sectional Participants: 2,478 Evidence: low
Full summary, score breakdown and related studies → Original source
Among the cohort of 7180 older adults (median age, 74 years [range, 65-102 years]; 4729 women [65.9%]), 1036 were African American or Black (14.4%), 21 were American Indian or Alaska Native (0.3%), 143 were Asian (2.0%), 332 were Hispanic (4.6%), and 5648 were non-Hispanic White (78.7%); the median educational level was 16.0 years (range, 1.0-29.0 years). 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
ϵ4 prevalence in Black (46%) and White participants (46%) was almost double that of Latino participants (24%). ϵ4 was associated with poorer baseline episodic memory only in White participants (p = .001), but had a moderately strong association with episodic memory change across all racial/ethnic groups (Blacks= -.061 SD/year, Latinos = -.055,Whites= -.055). ϵ4 association with semantic memory change was strongest in White participants (-.071), intermediate in Latino participants (-.041), and weakest in Black participants (-.022). 4 key findings →
Design: longitudinal study Participants: 297 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Greater neighborhood disadvantage was associated with elevated inflammatory and AD CSF biomarkers cross-sectionally and longitudinal increases in a nonspecific inflammatory blood biomarker. 5 key findings →
Design: longitudinal study Participants: 334 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Offspring participants (497 [33.9%]) had a mean (SD) age of 55 (10.7) years, had a mean (SD) of 13 (3.5) years of education, and included 117 Black individuals (23.5%), 348 Latinx individuals (70%), 32 White individuals (6.4%), and 324 women (65.2%). 1 key finding →
Design: cohort study Participants: 1,467 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
A structured, multicomponent skills training intervention that targeted CG self-care behaviors as one of five target areas, improved self-reported health status, and decreased burden and bother in racially and ethnically diverse CGs of people with dementia. 1 key finding →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Psychotic symptoms are common and persistent in patients with Alzheimer's disease. 5 key findings →
Design: longitudinal study Participants: 9,749 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Professional caregivers may initiate ACP early if strategies carefully consider timing and family and patient receptiveness or reluctance, and are family and patient-centered. 2 key findings →
Design: systematic review Participants: 33 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Rural subjects with higher health literacy were more likely to want comfort care compared to those with lower levels of health literacy. 5 key findings →
Design: randomized controlled trial Participants: 43 Evidence: high
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Among hospitalized older adults with serious illness, a pragmatic clinician-facing communication-priming intervention significantly improved documentation of goals-of-care discussions in the electronic health record, with a greater effect size in racially or ethnically minoritized patients. 3 key findings →
Participants: 3,918 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
In this cohort study, exposure to residential segregation throughout young adulthood was associated with worse processing speed among black participants as early as in midlife. 3 key findings →
Design: cohort study Participants: 5,115 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The higher risk of AD among blacks may stem from lower level of cognitive test performance persisting throughout the observation period rather than faster rate of late-life cognitive decline. 5 key findings →
Participants: 7,735 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
After adjusting for various risk factors, participants with low socioeconomic status (vs high) had increased risk for early-onset dementia (3·38, 2·61-4·37), and overall lifestyle mediated 3·2% (1·8-5·7) of the association. 4 key findings →
Design: cohort study Participants: 345 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
In 303 participants (mean [SD] age, 73.16 [5.19] years, 181 [60%] women, 96 [32%] non-Hispanic White, 113 [37%] Non-Hispanic Black, 94 [31%] Hispanic), baseline WMH volumes were associated with cortical thinning in medial temporal and frontal/parietal regions. 4 key findings →
Design: cohort study Participants: 303 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
These findings highlight substantial disparities in the timeliness and comprehensiveness of dementia diagnosis. 4 key findings →
Design: cross-sectional Participants: 993 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Factors influencing survival in Alzheimer disease include race/ethnicity and comorbid diabetes and hypertension. 5 key findings →
Design: longitudinal study Participants: 323 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The demographic and health transitions will lead to large and rapid increases in the numbers of dependent older people particularly in middle income countries (MIC). 2 key findings →
Design: meta-analysis Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
The mean age was 70.9 years (standard deviation, 5.9), 57.2% were women, 40.6% were illiterate, and 88.3% were farmers. 2 key findings →
Participants: 5,765 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
This comprehensive portrait of rural-urban differences in dementia care highlights possible geographically based inequities and can be used by researchers and decision makers to guide development of more equitable dementia care policies. 2 key findings →
Design: systematic review Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
The sample included 4340 adults (mean [SD; range] age, 58.1 [1.1; 56-63] years; 2400 [55.3%] women); 630 (14.4%) were Black, 900 (20.7%) were Latinx, and 2610 (60.1%) were White. 5 key findings →
Design: cohort study Participants: 4,340 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Among 283,772 participants (mean [SD] age 64.62 [8.96] years; 56.7% women), 60.3% identified as non-Hispanic White and 13.3% as Hispanic/Latino. 5 key findings →
Design: cohort study Participants: 283,772 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
There are a substantial number of people with dementia worldwide and these numbers will continue to increase mainly in LMIC, producing a wide range of impacts. 1 key finding →
Design: meta-analysis Evidence: high
Full summary, score breakdown and related studies → Original source
A systematic review of the literature was conducted to examine the relationship between ethnic minority status and provision of end-of-life care for people with dementia. 5 key findings →
Design: systematic review Evidence: high
Full summary, score breakdown and related studies → Original source
9 of the 925 studies in this tag that have a study page, 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 9. The same 9 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 28,980 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 28,980 records, built mostly from automated pulls of Europe PMC (62.8% of the library) and OpenAlex (17.6%), 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.
1,038 records (3.6% of the library) are not peer-reviewed — 966 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 →