27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
This cluster randomized clinical trial found that despite high adherence to the training, a multicomponent intervention promoting goal-directed care for suspected UTIs and LRIs did not significantly reduce antimicrobial use among nursing home residents with advanced dementia. 4 key findings →
Evidence: high
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The majority of dementia-related deaths in the United States occurred in nursing homes (66.9%). 5 key findings →
Design: cross-sectional Participants: 88,523 Evidence: moderate
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Delirium is a distressing neurocognitive disorder recently linked to sleep disturbances. 4 key findings →
Design: longitudinal study Participants: 818 Evidence: moderate
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Age, sex, functional limitation, and malnutrition seem to be the strongest predictors of death for patients with Alzheimer's disease in nursing homes. 3 key findings →
Design: longitudinal study Participants: 9,264 Evidence: moderate
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This was a retrospective cohort study to examine differences in health service utilization and outcomes between FFS and MA patients in SNFs following hip fracture hospitalization during the period January 1, 2011, to June 30, 2015, and followed up until December 31, 2015. 5 key findings →
Design: cohort study Evidence: moderate
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A minority of NH residents with advanced dementia received hospice care. 3 key findings →
Design: cohort study Evidence: moderate
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The sample included 2 619 464 patients (mean [SD] age, 81.3 [8.6] years; 61% women; 87% were White; 8% were Black; 22% with ADRD). 5 key findings →
Design: cross-sectional Participants: 464 Evidence: low
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Directives to forgo hospitalization for U.S. NH residents with advanced dementia are uncommon and are associated with the organizational features of the facilities caring for them and the intensity of end-of-life care practiced in the region, as well as individual resident characteristics. 5 key findings →
Design: cross-sectional Participants: 91,521 Evidence: low
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Among 370,094 persons with dementia, 93,801 (25.4%) were in MA (mean age [SD], 86.9 [7.7], 67.6% female), 39,586 (10.7%) were ACO attributed (mean age [SD], 87.2 [7.6], 67.3% female), and 236,707 (63.9%) were in TM (mean age [SD], 87.0 [7.8], 67.6% female). 5 key findings →
Participants: 370,094 Evidence: low
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The study cohort included 1 415 265 long-stay nursing home residents with dementia who died between 2013 and 2022. 5 key findings →
Design: cohort study Evidence: moderate
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We found that a larger share of Hispanic Medicare residents that are admitted to nursing homes have ADRD compared with African American and White beneficiaries. 3 key findings →
Participants: 1,302,099 Evidence: low
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memantine, cholinesterase inhibitor (ChEI), antipsychotic use] estimated adjusted odds ratios (aOR) and 95% CIs for resident, facility, and HRR characteristics. 5 key findings →
Participants: 9,735 Evidence: low
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The most important predictors of having a diagnosis of ADRD by the start of care OASIS assessment were a prior discharge diagnosis of ADRD among those admitted from an inpatient setting, and frequently exhibiting symptoms of confusion. 4 key findings →
Design: cohort study Evidence: moderate
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There were 115,757 NH residents with dementia who self-reported pain in the last 30 days of life. 5 key findings →
Participants: 20,585 Evidence: low
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An increasing number of older adults reside in assisted living (AL) toward the end of life, and it remains unclear if this trend represents an additional place of care and end-of-life transition before eventual nursing home admission. 1 key finding →
Design: cohort study Participants: 273,722 Evidence: moderate
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Meeting the care needs of people with dementia is a major public health and societal challenge. 1 key finding →
Evidence: low
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Describe geographic variation from 2019 to 2023 in assisted living (AL) and memory care supply, and its correlation with county-level characteristics. 2 key findings →
Participants: 1,000 Evidence: low
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The agreement between the two measures of dementia differed by age: in 2017, 79.2% of hospital claims for patients aged 66–74 had a diagnosis of dementia compared to older age categories that had dementia noted in over 85% of records. 5 key findings →
Participants: 1,273,348 Evidence: low
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People with dementia have complex medical, functional, and social needs and experience highly variable care quality and outcomes across the U.S. health care system. 5 key findings →
Evidence: low
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Stroke is highly prevalent in long-term care. 3 key findings →
Evidence: low
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Of 359,474 cognitively impaired residents, 49% had a diagnosis of dementia. 5 key findings →
Evidence: low
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In 2016, there were 1,005,781 Medicare Advantage and fee-for-service long-term residents. 5 key findings →
Evidence: low
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These findings suggest that moving to an AL influences Medicare enrollment decisions; and, variation in switching exists between the type of AL (general vs memory care) and whether or not an individual has dementia. 4 key findings →
Participants: 63,395 Evidence: low
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These findings suggest that moving to an AL influences Medicare enrollment decisions; and, variation in switching exists between the type of AL (general vs memory care) and whether or not an individual has dementia. 4 key findings →
Participants: 63,395 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
fewer functional limitations in the MA population, perhaps explaining why those patients had fewer health care visits. 1 key finding →
Evidence: low
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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 →