28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
A well-documented feature of Huntington's disease (HD) is disproportionate impairment in the ability to recognise the emotional expression of disgust. 2 key findings →
Evidence: low
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Central nervous system (CNS) human immunodeficiency virus type 1 (HIV-1) infection begins during primary viremia and continues throughout the course of untreated systemic infection. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Virtually all respondents reported increased skill, knowledge, and confidence, and all would recommend the program to others. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The SHBM provides an empirically based conceptual framework for examining cross-cultural differences in dementia care-seeking among diverse groups. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease (AD) is the most common cause of dementia worldwide. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Nine Consortium to Establish a Registry for Alzheimer's Disease (CERAD) sites were surveyed to identify barriers to recruiting black subjects. 4 key findings →
Evidence: low
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Ethnic minority patients are seen on a regular basis in European dementia clinics. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This paper is a qualitative study based on retrospective, unstructured, qualitative interviews with Mrs. Jones and other African-American, Chinese-American, Irish-American and Latino family caregivers in the Boston area. 5 key findings →
Evidence: low
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We compared black (n = 33) and white (n = 119) caregivers of dementia patients on indices of adaptation, adjustment, and utilization of supportive services. 3 key findings →
Participants: 33 Evidence: low
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In 1994-1995, a screening and examination survey was conducted to ascertain the prevalence of dementia, Parkinson's disease and stroke in two urban communities and one rural community of central Spain. 3 key findings →
Evidence: low
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A study to estimate the prevalence of dementia in a rural population was conducted in a community located on the outskirts of Madras city in South India. 2 key findings →
Evidence: low
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There was no significant difference between patients with dementia or depression in their wish to know their diagnosis. 4 key findings →
Evidence: low
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Only a minority of people with dementia receive a formal diagnosis despite a growing body of evidence highlighting the benefits of early diagnosis and intervention. 1 key finding →
Evidence: low
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This study investigated the prevalence of depressive symptoms among White Hispanic (WH) and White non-Hispanic (WNH) first-degree family caregivers. 1 key finding →
Evidence: low
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Pharmacotherapy of aggressive or agitated behaviors in the dementia patient has not been studied extensively, despite the prevalence of this problem. 2 key findings →
Evidence: low
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Despite the availability of different classes of drugs for the treatment of depressive and anxiety disorders, there are a number of clinically significant unmet needs, such as a high prevalence of treatment resistance, partial response, subsyndromal symptomatology, recurrence and relapse. 4 key findings →
Evidence: high
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Cerebral atrophy (CA) in stroke patients is associated with poststroke dementia and may reflect underlying neurodegenerative pathology. 3 key findings →
Evidence: low
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Fourteen measures of empty speech during a picture description task were examined in four subject groups--patients with Alzheimer's dementia, Wernicke's aphasias, anomic aphasias, and normal controls--to discover if these groups could be distinguished on the basis of their discourse. 1 key finding →
Evidence: low
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Frontal lobe degeneration of non-Alzheimer type (FLD) is the second most common primary degenerative dementia in southern Sweden. 5 key findings →
Evidence: low
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Parkinson's disease patients may suffer from cognitive impairment and behavioural problems such as apathy, personality changes, speech disturbances and visual hallucinations (Parkinson's disease dementia). 5 key findings →
Evidence: low
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Hypertension-caused arteriosclerotic changes of the long penetrating medullary arteries may cause misery perfusion and later ischemic damage in the periventricular white matter. 4 key findings →
Evidence: low
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Patients with degenerative dementia often show language disorders, but little is known about their verbal (VC) and non-verbal communication (NVC). 2 key findings →
Evidence: low
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The development of FAST is of great importance to clinicians in identifying possibly remediable complications of Alzheimer's disease and distinguishing them from the characteristic progression of the illness. 2 key findings →
Evidence: low
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The Arabic GDS is a useful measure to assess depression among community-dwelling older adults and primary care patients who do not have dementia. 1 key finding →
Participants: 38 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Thirty patients (16 male) were diagnosed as having PPFG (mean age at onset, 72.2 years; mean duration of disease, 5 years). 4 key findings →
Participants: 25 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 28,180 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 28,180 records, built mostly from automated pulls of Europe PMC (61.7% of the library) and OpenAlex (18.1%), 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 →