27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Several results seemed to challenge conventional assumptions of what precipitates NHA among persons with dementia. 3 key findings →
Design: systematic review Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
When diagnosed, non-Hispanic Blacks and Hispanics may have more advanced dementia. 1 key finding →
Design: cohort study Participants: 3,966 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Social Security and Medicare actuaries should account for the growing number of beneficiaries with multiple chronic conditions when determining population projections and trust fund solvency. 2 key findings →
Design: cohort study Participants: 1,372,272 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Residence in an SCU is associated with some, but not all, markers of better quality end-of-life care among nursing home residents with advanced dementia. 3 key findings →
Design: longitudinal study Participants: 43 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Nineteen articles involving 142,772 participants were included. 5 key findings →
Design: systematic review Participants: 142,772 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
This issue of Medical Care includes a theoretical framework for conducting research on MCC, a review of existing MCC research methods and methodological gaps to be addressed, and the results of several research studies addressing MCC. 5 key findings →
Design: longitudinal study Participants: 110,000 Evidence: high
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The six-item screener is a brief and reliable instrument for identifying subjects with cognitive impairment and its diagnostic properties are comparable to the full MMSE. 1 key finding →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Claims data studies that include indicators of potentially diminished patient functional status better capture heterogeneity of patients with multiple chronic conditions. 1 key finding →
Participants: 72,056 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Total monthly health care costs for individuals with ADRD are statistically greater (P<0.05) than controls beginning in the third month before diagnosis and remain significantly greater through the eighth month following diagnosis. 4 key findings →
Design: cohort study Participants: 927 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
For VA and Medicare cohorts, dementia diagnosis was absent in 88.7% and 80.5%, respectively, of follow-up encounters in the other system. 5 key findings →
Design: cohort study Participants: 68,092 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Overall, 5% of the study population (n=161,801) received 2+ months of HCC visits; of these, 46% also received 2+ HBMC visits (n=73,638) while 54% received only skilled home health (n=88,163 HCC but no HBMC). 4 key findings →
Participants: 161,801 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
memantine, cholinesterase inhibitor (ChEI), antipsychotic use] estimated adjusted odds ratios (aOR) and 95% CIs for resident, facility, and HRR characteristics. 5 key findings →
Participants: 9,735 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Competition from another NH-based SCU was associated with the presence of an SCU in a NH [adjusted odds ratio, 3.3; 95% confidence interval (CI), 1.6-6.6] but there were no associations with other measures. 3 key findings →
Design: cross-sectional Evidence: low
Full summary, score breakdown and related studies → Original source
Those who reached the DBT in both years had higher morbidity and utilization. 4 key findings →
Design: retrospective cohort Evidence: moderate
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Even after adjustment for certain clinical attributes, individual social factors and local market factors were associated with survival after hospice enrollment. 5 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
Our findings show a low level of disenrollment. 5 key findings →
Participants: 14,657 Evidence: low
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The findings suggest that diseases affect preference-based HRQoL differently in a hospital-based LTC population compared with previous studies in the general population. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Closing the gap substantially reduced individuals' out-of-pocket spending, and the reduction was larger for those with more severe mental disorders. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Limited to individuals who had been hospitalized in the 6 months preceding the first assessment, Minimum Data Set diagnoses were compared with those on the hospital discharge claims maintained in the Medicare Provider Analysis and Review database. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Between 1980 and 1987, the number of hospital discharges with total hip replacement (THR) increased by more than 90%, while total hospital discharges fell by more than 10%. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
MA-PD enrollees had significantly lower utilization of PIMs than standalone PDP enrollees: a 0.7 percentage-point [95% CI: 0.5, 0.8] lower prevalence of potentially harmful drug-disease interactions in older adults with dementia; a 3.1 percentage-point [2.6, 3.5] lower prevalence of potentially harmful drug-disease interactions in older adults with dementia and a history of falls; and a 0.5 percentage-point [0.4, 0.6] lower prevalence of high-risk medications in older adults. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
MA-PD enrollees had significantly lower utilization of PIMs than standalone PDP enrollees: a 0.7 percentage-point [95% CI: 0.5, 0.8] lower prevalence of potentially harmful drug-disease interactions in older adults with dementia; a 3.1 percentage-point [2.6, 3.5] lower prevalence of potentially harmful drug-disease interactions in older adults with dementia and a history of falls; and a 0.5 percentage-point [0.4, 0.6] lower prevalence of high-risk medications in older adults. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
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 →