28,580 Alzheimer's and dementia studies in plain English, each scored out of 100.
Identified prognostic factors can help clinicians and policy makers in tailoring management strategies for patients with COVID-19 infectious disease while researchers can utilise our findings to develop multivariable prognostic models that could eventually facilitate decision-making and improve patient important outcomes. 2 key findings →
Design: systematic review Participants: 207 Evidence: high
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The of establishing the diagnosis of pneumonia and cause is with the antibiotic studies for of community-acquired studies for of community-acquired The diagnosis of is based on a of clinical and laboratory The diagnosis of is and and as well as disease, congestive heart failure, with pneumonia and cases of and are of do not require and are the of antibiotic antimicrobial is usually for and a chest radiography is usually to establish the diagnosis of examination to or is for detecting pneumonia Chest radiography is considered is for the etiologic the and or conditions. 5 key findings →
Design: randomized controlled trial Evidence: high
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Whilst there is no conclusive evidence of the preoperative predictors for mortality following hip fractures, special attention should be paid to the above 12 strong evidence predictors. 3 key findings →
Design: systematic review Participants: 64,316 Evidence: high
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Out of hospital cardiac arrest (OHCA) remains a significant public health problem with high mortality and morbidity. 5 key findings →
Design: meta-analysis Participants: 1,410 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Delirium is the most common manifestation of brain dysfunction in critically ill patients. 5 key findings →
Participants: 25,000 Evidence: low
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Of 6 952 440 vaccinated patients in the derivation cohort, 5 150 310 (74.1%) had two vaccine doses. 4 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
This large cohort of 85 year olds showed good levels of both self rated health and functional ability despite significant levels of disease and impairment. 4 key findings →
Design: cohort study Participants: 853 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Studies were significantly heterogeneous in terms of country, outcomes assessed, and the timing of post-ED outcome assessments. 5 key findings →
Design: systematic review Participants: 7,940 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Despite methodologic limitations, certain risk factors for delirium seem to be consistent and could help identify high-risk patients. 3 key findings →
Participants: 1,365 Evidence: low
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We found significant independent associations with overall fracture risk in women for age, body mass index, ethnic origin, alcohol intake, smoking status, chronic obstructive pulmonary disease or asthma, any cancer, cardiovascular disease, dementia, diagnosis or treatment for epilepsy, history of falls, chronic liver disease, Parkinson's disease, rheumatoid arthritis or systemic lupus erythematosus, chronic renal disease, type 1 diabetes, type 2 diabetes, previous fracture, endocrine disorders, gastrointestinal malabsorption, any antidepressants, corticosteroids, unopposed hormone replacement therapy, and parental history of osteoporosis. 3 key findings →
Design: cohort study Participants: 3,142,673 Evidence: moderate
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This study provides a systematic review of predictors of NHP in the general population of developed countries. 3 key findings →
Design: systematic review Evidence: high
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In persons with multimorbidity, there exists co-occurrence of diseases beyond chance, which clinicians need to take into account in their daily practice. 2 key findings →
Design: prospective cohort Participants: 1,099 Evidence: moderate
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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
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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
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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
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Thirty-two percent of residents had DNR directives, whereas less than 2% had DNH directives. 5 key findings →
Design: cohort study Participants: 1,962,742 Evidence: moderate
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We believe this information important when counseling elderly patients regarding the risks of mortality and PJI after TKA and risk-adjusting publicly reported TKA patient outcomes. 2 key findings →
Participants: 83,011 Evidence: low
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Exposure to ACH medications is independently and specifically associated with a subsequent increase in delirium symptom severity in elderly medical inpatients with diagnosed delirium. 3 key findings →
Design: longitudinal study Participants: 278 Evidence: moderate
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We have prospectively followed over a 5-year period 434 volunteers who were at intake ambulatory, functional, presumably nondemented, and between 75 and 85 years of age. 5 key findings →
Evidence: moderate
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analysis of returning home at discharge included 87,797 patients; 57,104 (65%) were discharged home. 5 key findings →
Participants: 87,797 Evidence: moderate
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Diagnosis frequency ranged across HRRs from 0.58 chronic conditions in Grand Junction, Colorado, to 1.23 in Miami, Florida (mean, 0.90 [95% confidence interval {CI}, 0.89-0.91]; median, 0.87 [interquartile range, 0.80-0.96]). 5 key findings →
Design: cross-sectional Evidence: low
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This study confirms that healthy senior citizens as well as senior citizens with underlying medical conditions are at risk for the serious complications of influenza and benefit from vaccination. 2 key findings →
Participants: 20,000 Evidence: low
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Although non-BzRAs have improved safety profiles compared with benzodiazepines, their side effects include dementia, serious injury, and fractures, which should limit their use. 3 key findings →
Evidence: high
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Overall, 233,567 long-term home care recipients with known carer status were studied. 5 key findings →
Design: cross-sectional Evidence: moderate
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A comprehensive outcome monitoring system to monitor the quality and safety of care and variation for HCP recipients was developed. 1 key finding →
Design: cross-sectional Participants: 68 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 28,580 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 28,580 records, built mostly from automated pulls of Europe PMC (62.2% of the library) and OpenAlex (17.8%), 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 (3.6% 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 →