27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
The data from this study provide strong preliminary evidence that, in patients newly admitted to post-acute care facilities from acute care hospitals, delirium symptoms are prevalent, persistent, and associated with poor functional recovery. 4 key findings →
Design: cohort study Participants: 551 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
There was no control group, but worsening of akinesia, speech, postural stability, freezing of gait, and cognitive function between the first and the fifth year is consistent with the natural history of Parkinson's disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
There was a significant intervention effect as hypothesized for participants with lower mastery at baseline on all three bother (p =.04), anxiety (p =.01), and depression (p =.007). 4 key findings →
Design: longitudinal study Evidence: high
Full summary, score breakdown and related studies → Original source
Progressive non-fluent aphasia (PNFA) is a syndrome in which patients lose the ability to communicate fluently in the context of relative preservation of single word comprehension and non-linguistic cognitive abilities. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Processing of speech is obligatory. Thus, during normal speech comprehension, the listener is aware of the overall meaning of the speaker's utterance without the need to direct attention to individual linguistic and paralinguistic (intonational, prosodic, etc.) features contained within the speech signal. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Primary Progressive Aphasia (PPA) is a behaviorally focal dementia syndrome with deterioration of language functions but relative preservation of other cognitive domains for at least the first two years of disease. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Divided attention markedly impairs the ability of patients with AD to regulate the stride-to-stride variations in gait timing. 4 key findings →
Design: cross-sectional Evidence: low
Full summary, score breakdown and related studies → Original source
The presence of cognitive impairment in corticobasal degeneration (CBD) is now widely recognised. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Allostasis designates processes of bodily adaptation to stressful challenges, whereas allostatic load means the costs of wear and tear to the body as a consequence of inefficient allostasis. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
We describe a right-handed man who developed progressive nonfluent aphasia and apraxia of speech beginning at age 71. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
We find a notable discord between physician opinion, reported practice, and the literature regarding PEG tubes in advanced dementia that reveals some of the barriers to decreasing the referral of these patients for PEG. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
We describe a 76-year-old man (ADY) with dynamic aphasia in the setting of a degenerative frontal lobe dementia: primary progressive dynamic aphasia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Assessment by a speech therapist, staffing ratios, advance directives, fiscal considerations, and specialized dementia units are potentially modifiable factors in nursing homes that may influence the practice of tube feeding in advanced cognitive impairment. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Reduced coherence between central and temporal cortex is discussed in light of a neurological model of AD that hypothesizes reduced electrocortical efficiency and a breakdown of neural network communication to temporal lobes possibly resulting from temporal lobe atrophy. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
This paper examines key challenges and strategies for including older people with dementia in an ethnographic study of quality of life in institutional care settings. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
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 →