30,980 Alzheimer's and dementia studies in plain English, each scored out of 100.
Among 88 African Americans with cognitive impairment (mean = 10 years follow-up), Medicare claims identified dementia <2 years from cohort diagnosis in 55%; 27% were identified 2-9.9 years after cohort diagnosis, and in 18% there was either no claims diagnosis during the study period, or claims identified dementia 10+ years after cohort diagnosis. 4 key findings →
Evidence: moderate
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Twenty-one studies based on 18 samples were identified. 3 key findings →
Evidence: low
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Increased public education about AD is needed in these communities. 2 key findings →
Evidence: low
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The prevalence of cognitive impairment is higher in rural compared with urban populations. 3 key findings →
Evidence: low
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Subjects were poor, with low acculturation levels despite long years of U.S. residence. 2 key findings →
Evidence: low
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Cognitive impairment and dementia continue to threaten the aging population. 1 key finding →
Evidence: low
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The prevalence of idiopathic normal-pressure hydrocephalus (NPH) in a community was investigated by retrospective analysis of data from a previous community-based study of 170 randomly selected elderly residents aged 65 years or older. 1 key finding →
Participants: 170 Evidence: low
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The sample consisted of 84 participants from the Choctaw Nation in Oklahoma, including 53 females and 31 males [M age = 64.89 (SD = 9.73), M education = 12.58 (SD = 2.35)]. 2 key findings →
Participants: 84 Evidence: low
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Data on 1888 patients seen at Alzheimer's Disease Diagnostic and Treatment Centers in California were used to examine possible differences in Mini-Mental State Examination (MMSE) results for different racial-ethnic groups. 2 key findings →
Participants: 1,888 Evidence: low
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VTM is emerging as an effective way to provide consultation and care to rural residents who may not have access to specialty services and can be integrated into current clinical settings. 3 key findings →
Participants: 12 Evidence: low
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Surprisingly, compared to White female caregivers, all the other groups were 37% (95% CI 0.41-0.95) to 71% (95% CI 0.15-0.56) less likely to have emotional burden. 2 key findings →
Evidence: low
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Bilingualism has been reported to delay the age of retrospective report of first symptom in dementia. 4 key findings →
Participants: 1,789 Evidence: low
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The Alzheimer's Disease Neuroimaging Initiative (ADNI) has fostered collaboration among researchers around the world, catalyzing innovation and accelerating progress in the field. 2 key findings →
Design: longitudinal study Evidence: moderate
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The cross-disciplinary expertise, required for GA, common in the days before medical specialization and enabled by the relative paucity of development in various fields compared with today, can be reborn with the advent of Electronic Health Records (EHR) systems that make the tools of medical geography accessible to a wide variety of health care researchers and clinical subspecialties. 4 key findings →
Participants: 127 Evidence: low
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Approximately half of Medicare beneficiaries are enrolled in Medicare Advantage (MA), a private plan alternative to traditional Medicare (TM). 3 key findings →
Evidence: low
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The study included 2,284,175 FFS Medicare beneficiaries with an ADRD diagnosis in 2017. 5 key findings →
Participants: 2,284,175 Evidence: low
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In models adjusting for individual demographic and health characteristics, Hispanic composition had a significant positive association with cognitive function (standardised β=0.136, p<0.05) and moderate evidence of an association with greater cognitive decline (standardised β=-0.014, p=0.09). 5 key findings →
Participants: 6,150 Evidence: moderate
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Previous studies indicate that increased healthcare access through Medicaid expansion and alleviation of socioeconomic stressors via higher minimum wages improved health outcomes. 5 key findings →
Participants: 311 Evidence: low
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Among 32,430 individuals (mean age at first hospital encounter 76.6±10.9 years; 59.1% female; 4.2% African American; 5.0% Hispanic), only 16.0% received an MCI diagnosis before their dementia diagnosis. 5 key findings →
Participants: 32,430 Evidence: low
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Older patients with kidney failure residing in high-disadvantage neighborhoods, particularly Black patients and those in suburban, rural, or small-town areas, had a higher risk of ADRD compared with those in low-disadvantage neighborhoods. 5 key findings →
Design: cohort study Evidence: moderate
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Older adults living in rural counties had lower cognitive functioning than urban adults. 4 key findings →
Participants: 152,444 Evidence: low
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Among 5712 adults (mean [SD] age, 63.47 (8.15) years; unweighted 3663 [53.92%] female), higher ln(ptau-181) was associated with ECog-12 memory (unstandardized β = 0.088; 95% CI, 0.005-0.170). 5 key findings →
Design: cross-sectional Participants: 5,712 Evidence: moderate
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Study-specific algorithms yielded comparable dementia prevalence estimates: 10.8 % in NHATS and 11.1 % in HRS-HCAP. 5 key findings →
Participants: 5,696 Evidence: low
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Participants were distributed across various regions of Australia: seven interviews from inner regional Australia, five interviews from outer regional Australia, and twenty-one interviews from metropolitan areas. 5 key findings →
Evidence: low
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A total of 30 articles were included. These detail the multifaceted responsibilities of clinical pharmacists in primary care for older people. 5 key findings →
Participants: 30 Evidence: low
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10 of the 926 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 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 30,980 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 30,980 records, built mostly from automated pulls of Europe PMC (65.2% of the library) and OpenAlex (16.4%), 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.
1,042 records (3.4% of the library) are not peer-reviewed — 967 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