27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
This study provides longitudinal evidence for a decline in driving performance over time, primarily in early-stage DAT, and supports the need not only for driving assessments, but also for reevaluation of individuals with very mild and mild DAT. 3 key findings →
Design: longitudinal study Participants: 21 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Two out of five elderly patients in general hospitals suffer from a cognitive disturbance. 1 key finding →
Design: cross-sectional Participants: 1,469 Evidence: low
Full summary, score breakdown and related studies → Original source
Study selection The authors developed eight key questions representing a logical chain between screening and improved health outcomes, along with eligibility criteria for admissible evidence for each question. 5 key findings →
Evidence: high
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The objective of this study was to compare the effects of a multisensory stimulation environment (MSSE) and individualized music sessions on agitation, emotional and cognitive status, and dementia severity in a sample of institutionalized patients with severe dementia. 4 key findings →
Evidence: low
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Older patients with a college education who present with complaints of cognitive decline (reported by themselves or others) and score less than 27 on the MMSE are at a greater risk of being diagnosed with dementia and should be referred for a comprehensive dementia evaluation, including formal neuropsychological testing. 2 key findings →
Participants: 307 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Better knowledge of the preclinical phase of Alzheimer's disease would be an important advance to allow earlier treatment of this ominous disease. 2 key findings →
Participants: 1,050 Evidence: moderate
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We developed a new instrument, the Neuropsychiatric Inventory (NPI), to assess 10 behavioral disturbances occurring in dementia patients: delusions, hallucinations, dysphoria, anxiety, agitation/aggression, euphoria, disinhibition, irritability/lability, apathy, and aberrant motor activity. 5 key findings →
Evidence: low
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The prevalence of comorbid conditions in people with dementia is high. 3 key findings →
Participants: 54 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Behavioral symptoms such as repetitive speech, wandering, and sleep disturbances are a core clinical feature of Alzheimer disease and related dementias. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Optimal ranges of CDR-SOB scores corresponding to the global CDR scores were 0.5 to 4.0 for a global score of 0.5, 4.5 to 9.0 for a global score of 1.0, 9.5 to 15.5 for a global score of 2.0, and 16.0 to 18.0 for a global score of 3.0. 2 key findings →
Participants: 1,577 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our model could aid GPs or health service planners with the early detection of dementia. 1 key finding →
Design: case-control study Participants: 93,120 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Beneficiaries included 2,713,573 White, 251,958 Black, 196,845 Hispanic, 95,719 Asian, 11,727 American Indian/Alaska Native, and 63,795 of other race/ethnicity. 5 key findings →
Design: retrospective cohort Participants: 3,333,617 Evidence: moderate
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Care quality has important implications for people with dementia. 1 key finding →
Design: cohort study Participants: 373,695 Evidence: moderate
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The overall PAF for the 14 modifiable risk factors was 59.5% (95% CI = 58.5-60.5). 5 key findings →
Design: longitudinal study Participants: 9,949 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
During the 4-year follow-up, 134 individuals were diagnosed with dementia. 5 key findings →
Design: cohort study Participants: 2,220 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
PLWD also commonly experience social isolation (Shen et al., 2022), poorer physical function (Jehu et al., 2024a), worsened behavioral and psychological symptoms (Cerejeira et al., 2012), poorer quality of life (Cerejeira et al., 2012), and reduced access to healthcare (Mitchell et al., 2016) compared to older adults without dementia. 5 key findings →
Design: randomized controlled trial Participants: 21 Evidence: high
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Despite mortality due to communicable diseases, poverty, and human conflicts, dementia incidence is destined to increase in the developing world in tandem with the ageing population. 1 key finding →
Evidence: low
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Quantitative imaging of cerebral blood flow and metabolism by positron emission tomography can differentiate between vascular dementia and degenerative dementia and show the interaction between vascular and metabolic changes. 5 key findings →
Evidence: low
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Poor performance on free recall from FCSR predicts future dementia. 3 key findings →
Design: longitudinal study Evidence: moderate
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FTD is a malignant disorder with limited life expectancy. 5 key findings →
Participants: 31 Evidence: low
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The Neuropsychiatric Inventory (NPI) was developed to assess psychopathology in dementia patients. 1 key finding →
Evidence: low
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There are significant barriers to help seeking for dementia in ME groups. 2 key findings →
Evidence: low
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In this population, the prevalence of AD and other dementias was low, increased with age, and was not associated with gender or literacy. 5 key findings →
Participants: 5,126 Evidence: moderate
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Three randomized controlled trials (RCTs) and 6 single-case designs (SCDs; N of 1 trials) met inclusion criteria. 4 key findings →
Evidence: high
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In India, increasing lifespan and decreasing fertility rates have resulted in a growing number of older persons. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
9 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 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 27,380 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.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,380 records, built mostly from automated pulls of Europe PMC (60.6% of the library) and OpenAlex (18.6%), 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.
1,032 records (3.8% 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 →