An estimated 8.8 million Indians older than 60 years have dementia. 2 key findings →
Design: longitudinal study Participants: 2,528 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Research
31,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Dementia diagnosis recording in general hospitals is increasing but remains less likely in some groups. 1 key finding →
Design: cohort study Participants: 21,387 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
When diagnosed, non-Hispanic Blacks and Hispanics may have more advanced dementia. 1 key finding →
Design: cohort study Participants: 3,966 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
People from the black ethnic group had a higher incidence of dementia diagnosis and those from the Asian ethnic group had lower incidence compared with the white ethnic group. 5 key findings →
Design: cohort study Participants: 2,511,681 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
65/100
Most studies have focused on dementia and suicidal behavior, with inconsistent results. 5 key findings →
Design: cohort study Participants: 21 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The use of videoconference technology to deliver health care diagnostics and treatment continues to grow at a rapid pace. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
59/100
International hospital-based studies have indicated a high risk of cognitive impairment after stroke, evidence from community-based studies in China is scarce. 2 key findings →
Design: cross-sectional Participants: 599 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
In this study, we report the experience of the only reference clinical next-generation sequencing lab in Saudi Arabia with the first 1000 families who span a wide-range of suspected Mendelian phenotypes. 1 key finding →
Participants: 1,019 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our findings suggest cutoffs may need to be stratified by race/ethnicity and education to ensure detecting MCI from normal and MCI from dementia. 2 key findings →
Participants: 3,895 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Survival after dementia diagnosis differs by race/ethnicity, with shortest survival among whites and longest among Asian Americans. 3 key findings →
Participants: 23,032 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Two of every three persons living with dementia reside in low- and middle-income countries (LMICs). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Numerous tools for assessment of cognitive impairment in low-literacy settings have been developed, and tools developed for use in high-income countries have also been validated in low-literacy settings. 2 key findings →
Design: meta-analysis Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
A co-morbidity score was significantly higher in AD participants compared to controls. 3 key findings →
Participants: 187 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Given considerable variation in diagnostic and therapeutic practice, there is a need for national guidance on the use of neuroimaging, fluid biomarkers, cognitive testing, follow-up and diagnostic terminology in mild cognitive impairment (MCI). 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The Alzheimer's Association hosted the second Latinos & Alzheimer's Symposium in May 2021. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Our findings suggest that poor chewing ability is associated with cognitive impairment or dementia in the elderly living in rural area. 4 key findings →
Design: cross-sectional Participants: 295 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Our results suggest that efforts to reduce racial disparities in underdiagnosis are warranted. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The PRISM-PC questionnaire captures primary care patients' acceptance, perceived harms, and perceived benefits of dementia screening. 2 key findings →
Design: cross-sectional Participants: 315 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Previous studies have indicated a prevalence of dementia in older admissions of ∼42% in a single London teaching hospital, and 21% in four Queensland hospitals. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
These data suggest that older adults in rural communities may be underdiagnosed with ADRD, and/or diagnosed at later stages of dementia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
47/100
The median age of participants was 79 years, 69% (31 of 45) were of non-Hispanic white race/ethnicity, and 60% (27 of 45) had attended at least some college. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Cognitive assessment is a basic element for dementia diagnosis. 2 key findings →
Design: cross-sectional Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Several recent autopsy studies suggest that senile dementia of Lewy body type (SDLT) may be the second most common neuropathologic cause of dementia in the elderly, accounting for 7 to 30% of all cases. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
45/100
The prevalence of cognitive impairment is higher in rural compared with urban populations. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Bilingualism has been reported to delay the age of retrospective report of first symptom in dementia. 4 key findings →
Participants: 1,789 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Where “Free full text” comes from
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.
How the 0–100 score works — and why some entries are capped
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.
- Journal tier up to 10 pts
- Journal's citation record up to 4 pts
- Study design up to 12 pts
- Strength of evidence up to 5 pts
- Peer-review validation up to 10 pts
- How recent up to 5 pts
- Sample size up to 4 pts
- Effect reported up to 3 pts
- Studied in people up to 3 pts
- Randomized / blinded up to 2 pts
- Times cited up to 7 pts
- Citations per year up to 5 pts
- Impact for its field and year up to 6 pts
- Cited by studies here up to 6 pts
- Still being cited up to 4 pts
- Senior author's track record up to 4 pts
- Institution's track record up to 3 pts
- Multicenter collaboration up to 3 pts
- Indexed in PubMed up to 2 pts
- Free to read up to 2 pts
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 31,380 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.
What this library is — and isn't
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 31,380 records, built mostly from automated pulls of Europe PMC (65.6% of the library) and OpenAlex (16.2%), 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.
1,048 records (3.3% of the library) are not peer-reviewed — 973 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 →
Newest studies, as a dated timeline → Atom feed Where this research is being discussed: events