27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
Dementia emerged as the most potent risk factor for institutionalization in this 12-year community-based epidemiological study. 3 key findings →
Design: longitudinal study Participants: 1,147 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Persistence with statin therapy in older patients declines substantially over time, with the greatest drop occurring in the first 6 months of treatment. 1 key finding →
Design: cohort study Evidence: moderate
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Delirium is a frequent complication in older ICU patients and often persists beyond their ICU stay. 3 key findings →
Design: cohort study Participants: 45 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Understanding the mental health consequences of child maltreatment at different life stages is important in accurately quantifying the burden of maltreatment. 4 key findings →
Design: cohort study Participants: 56,082 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
A total of 1780 major operations (representing 9 556 171 survey-weighted operations nationally) were identified from 1477 community-living participants; mean (SD) age was 79.5 (7.0) years, with 56% being female. 5 key findings →
Design: cohort study Participants: 1,780 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
From 1996 through 2008, 5.55% of hospitalized patients resided in a nursing home 6 months later compared with 0.54% of nonhospitalized control patients. 5 key findings →
Design: retrospective cohort Participants: 762,243 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Over a maximum follow-up of 26 years, the median time to event was 1·2 years (IQR 0·2-3·3) in the delirium group and 1·3 years (0·3-3·6) in the control group. 5 key findings →
Design: cohort study Participants: 909 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Out of 929 patients, 184 (20%) experienced POD. 5 key findings →
Design: cohort study Participants: 929 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
All three psychomotor disturbance subtypes had an elevated risk of dying during the 1-year follow-up relative to the normal psychomotor group, though the hypoactive group had the highest mortality risk and was the only group with a statistically significantly elevated risk relative to the normal group. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Compared with nonprofit hospice agencies, for-profit hospice agencies had a higher percentage of patients with diagnoses associated with lower-skilled needs and longer lengths of stay. 5 key findings →
Design: cross-sectional Participants: 4,705 Evidence: low
Full summary, score breakdown and related studies → Original source
Overall, hospice care in NHs does not appear to increase government expenditures. 4 key findings →
Design: cohort study Participants: 5,774 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Compared with 2000, the adjusted odds ratio (AOR) for the increase in NIV use was 2.63 (95% CI, 2.46-2.82; % receipt: 0.8% vs 2.0%) for 2005 and 11.84 (95% CI, 11.11-12.61; % receipt: 0.8% vs 7.1%) for 2017. 4 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Hospice enrollment results in lower combined Medicare/Medicaid expenditures in the last month of life, particularly among short-stay NH residents. 3 key findings →
Design: cohort study Participants: 5,774 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Inclusion and exclusion criteria were met in 303 patients, and 25 (8.3%) presented to the ED with delirium. 1 key finding →
Design: cross-sectional Participants: 303 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The 4AT is a new test for rapid screening of delirium in routine clinical practice. 1 key finding →
Participants: 29 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
There were 140,055 subjects in the 1998-1999 cohort and 146,328 in the 1999-2000 cohort, of which 55.5 percent and 59.7 percent, respectively, were immunized. 4 key findings →
Participants: 140,055 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
At cohort entry, the mean age was 54.8 years (SD 13.3), 56.5% were men, and 72.8% were black. 4 key findings →
Design: cohort study Participants: 324 Evidence: moderate
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Compared with men, women had decreased risk of any LEA (hazard ratio [HR], 0.34 [95% CI, 0.31-0.37]). 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
From 2011 to 2017, of the 1193 major surgeries (from 992 community-living participants), the mean (SD) age was 79.2 (7.1) years; 665 were women (55.7%), and 30 were Hispanic (2.5%), 198 non-Hispanic Black (16.6%), and 915 non-Hispanic White (76.7%). 1 key finding →
Design: cohort study Participants: 5,590 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Roughly one in five hospice patients were discharged alive (21%; n = 1911). 2 key findings →
Design: cohort study Participants: 9,190 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
There are specific high-risk preexisting comorbidities for COVID-19 hospitalization and related deaths in community-based older men and women. 3 key findings →
Participants: 19 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Ageing and a sedentary lifestyle are associated with declines in muscle function and cardiorespiratory fitness, resulting in an impaired capacity to perform daily activities and maintain independent functioning. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Globally, low back pain, migraine, age-related and other hearing loss, iron-deficiency anaemia, and major depressive disorder were the five leading causes of YLDs in 2016, contributing 57·6 million (95% uncertainty interval [UI] 40·8-75·9 million [7·2%, 6·0-8·3]), 45·1 million (29·0-62·8 million [5·6%, 4·0-7·2]), 36·3 million (25·3-50·9 million [4·5%, 3·8-5·3]), 34·7 million (23·0-49·6 million [4·3%, 3·5-5·2]), and 34·1 million (23·5-46·0 million [4·2%, 3·2-5·3]) of total YLDs, respectively. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Total numbers of global DALYs grew 6·1% (95% UI 4·0-8·1), from 2·64 billion (2·46-2·86) in 2010 to 2·80 billion (2·57-3·08) in 2023, but age-standardised DALY rates, which account for population growth and ageing, decreased by 12·6% (11·0-14·1), revealing large long-term health improvements. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Of 1054 women with a mean age of 56.0 years at baseline, 1003 (95.2%) completed 10 years of follow-up. 5 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
10 of the 862 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 10. The same 10 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 27,780 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 →