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Research

27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.

Find studies

Showing 1–25 of 33 studies in Disparities (page 1 of 2) · 27,380 in the whole library · How the 0–100 score works

Showing 33 studies tagged body — clear

Browse by subject, author or institution

Each number is how many studies that link shows, with your other filters kept.

Other subjects

Authors

Names as each record prints them; the same person can appear under two spellings.

Institutions

From OpenAlex; 12,859 studies have no institution on record and are not counted here.

What “Disparities” covers

Disparities — Differences in dementia risk, diagnosis and care across race, ethnicity, income, geography and sex.

A note on reading research. One study is rarely the final word.

We try to note the size of a study, whether it was in humans or animals, and how early-stage the finding is. If a summary here doesn't make that clear, treat it with extra caution and check the original source.

Risk Factors for Phenoconversion in Rapid Eye Movement Sleep Behavior Disorder

✓ Peer-reviewed alzhub usefulness score 58 out of 100. Annals of neurology 2022-01-24

Our findings elucidate the predictive values of environmental factors and comorbid conditions in identifying RBD patients at higher risk of phenoconversion. 4 key findings →

Participants: 319 Evidence: moderate

Full summary, score breakdown and related studies → Original source Free full text

Neurons selectively targeted in frontotemporal dementia reveal early stage TDP-43 pathobiology

✓ Peer-reviewed alzhub usefulness score 55 out of 100. Acta neuropathologica 2018-12-03

TAR DNA-binding protein 43 (TDP-43) aggregation is the most common pathological hallmark in frontotemporal dementia (FTD) and characterizes nearly all patients with motor neuron disease (MND). 3 key findings →

Participants: 17 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Clinical characteristics in early Parkinson's disease in a central California population-based study

✓ Peer-reviewed alzhub usefulness score 52 out of 100. Movement disorders : official journal of the Movement Disorder Society 2005-09-01

There is considerable variation in the phenotypic appearance of individuals with idiopathic Parkinson's disease (PD), which may translate into differences in disease progression in addition to underlying disease etiology. 5 key findings →

Participants: 162 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Prevalence of essential tremor in three elderly populations of central Spain

✓ Peer-reviewed alzhub usefulness score 51 out of 100. Movement disorders : official journal of the Movement Disorder Society 2003-04-01

Although essential tremor (ET) is considered the most prevalent adult movement disorder, the available information on its prevalence and distribution worldwide is not completely understood. 5 key findings →

Design: cross-sectional Participants: 5,278 Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Neuropathological Diagnoses of Demented Hispanic, Black, and Non-Hispanic White Decedents Seen at an Alzheimer's Disease Center

✓ Peer-reviewed alzhub usefulness score 51 out of 100. Journal of Alzheimer's disease : JAD 2019-01-01

Our nation is becoming increasingly diverse; however, few autopsy studies examine multiple ethnoracial groups, especially Hispanics. 4 key findings →

Evidence: moderate

Full summary, score breakdown and related studies → Original source Free full text

What best differentiates Lewy body from Alzheimer's disease in early-stage dementia?

✓ Peer-reviewed alzhub usefulness score 50 out of 100. Brain : a journal of neurology 2006-01-09

To determine which clinical feature(s) [among visual hallucinations (VH), extrapyramidal signs (EPS) and visuospatial impairment] in the earliest stages of disease best predicted a diagnosis of dementia with Lewy bodies (DLB) at autopsy, first-visit data of 23 pathologically proven DLB and 94 Alzheimer's disease cases were compared. 5 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Dietary antioxidants and other dietary factors in the etiology of Parkinson's disease

✓ Peer-reviewed alzhub usefulness score 50 out of 100. Movement disorders : official journal of the Movement Disorder Society 1997-03-01

It has been suggested that dietary antioxidants reduce Parkinson's disease (PD) risk by neutralizing free radicals, thus preventing injury to neurons in the substantia nigra. 4 key findings →

Design: case-control study Participants: 57 Evidence: moderate

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Prevalence of PD and other types of parkinsonism in three elderly populations of central Spain

✓ Peer-reviewed alzhub usefulness score 49 out of 100. Movement disorders : official journal of the Movement Disorder Society 2003-03-01

The prevalence of Parkinson's disease (PD) and other types of parkinsonism in three elderly populations of central Spain was investigated using a door-to-door, two-phase approach. 2 key findings →

Participants: 5,278 Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Executive function in progressive and nonprogressive behavioral variant frontotemporal dementia

✓ Peer-reviewed alzhub usefulness score 48 out of 100. Neurology 2008-11-01

Contrary to some prior reports, behavioral variant frontotemporal dementia (bv-FTD) patients who progress over time are typically impaired on executive tasks at first presentation, although an important minority of true FTD patients perform normally. 3 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

My belief or yours? Differential theory of mind deficits in frontotemporal dementia and Alzheimer's disease

✓ Peer-reviewed alzhub usefulness score 46 out of 100. Brain : a journal of neurology 2012-10-01

It has been suggested that a theory of mind deficit may account for some of the abnormalities in interpersonal behaviour that characterize patients affected by behavioural variant frontotemporal dementia. 5 key findings →

Evidence: low

Full summary, score breakdown and related studies → Original source Full text may need a subscription

Early environmental origins of neurodegenerative disease in later life

✓ Peer-reviewed alzhub usefulness score 45 out of 100. Environmental health perspectives 2005-09-01

Parkinson disease (PD) and Alzheimer disease (AD), the two most common neurodegenerative disorders in American adults, are of purely genetic origin in a minority of cases and appear in most instances to arise through interactions among genetic and environmental factors. 1 key finding →

Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

An evaluation of the predictive validity and inter-rater reliability of clinical diagnostic criteria for senile dementia of Lewy body type

✓ Peer-reviewed alzhub usefulness score 45 out of 100. Neurology 1994-05-01

Several recent autopsy studies suggest that senile dementia of Lewy body type (SDLT) may be the second most common neuropathologic cause of dementia in the elderly, accounting for 7 to 30% of all cases. 1 key finding →

Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

Prevalence of Alzheimer's disease, vascular dementia and dementia with Lewy bodies in a Japanese population

✓ Peer-reviewed alzhub usefulness score 45 out of 100. Psychiatry and clinical neurosciences 2001-02-01

We studied the prevalence of dementing disorders in a rural town of Japan (Amino-cho), using a door-to-door two-phase design. 2 key findings →

Participants: 170 Evidence: low

Full summary, score breakdown and related studies → Original source Free full text

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Where “Free full text” comes from

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

How the 0–100 score works — and why some entries are capped

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.

  • Journal tier up to 10 pts
  • Journal's citation record up to 4 pts
  • Study design up to 12 pts
  • Strength of evidence up to 5 pts
  • Peer-review validation up to 10 pts
  • How recent up to 5 pts
  • Sample size up to 4 pts
  • Effect reported up to 3 pts
  • Studied in people up to 3 pts
  • Randomised / blinded up to 2 pts
  • Times cited up to 7 pts
  • Citations per year up to 5 pts
  • Impact for its field and year up to 6 pts
  • Cited by studies here up to 6 pts
  • Still being cited up to 4 pts
  • Senior author's track record up to 4 pts
  • Institution's track record up to 3 pts
  • Multi-centre collaboration up to 3 pts
  • Indexed in PubMed up to 2 pts
  • Free to read up to 2 pts

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.

What this library is — and isn't

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 →

Newest studies, as a dated timeline →    Atom feed