67/100
✓ Peer-reviewed
alzhub usefulness score 67 out of 100.
·
JAMA Network Open
·
2024-12-12
The study consisted of 20 400 patients (9264 female [45.4%]; 1576 Black [7.7%], 3944 Latinx [19.3%], and 10 480 White [51.4%]), including 5100 patients with mTBI (median [IQR] age, 36.0 [25.0-51.0] years), 5100 patients with msTBI (median [IQR age, 35.0 [25.0-52.0] years), and 10 200 matched patients in the control group (median [IQR] age, 36.0 [25.0-51.0] years). 5 key findings →
Design: cohort study
Participants: 400
Evidence: moderate
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66/100
✓ Peer-reviewed
alzhub usefulness score 66 out of 100.
·
Neurology
·
2025-06-27
Among eligible participants (n = 705,061), 264,294 individuals (37.5% of eligible participants) initiated any statin during 2001-2010 ("initiators"), of whom 249,613 (94.4%) were matched with 255,937 unique noninitiators to create the analytic sample (322,358 unique participants; mean age at baseline = 67.4 years; 55.1% female). 3 key findings →
Design: cohort
Participants: 322,358
Evidence: high
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Among well-functioning older adults, DM and poor glucose control among those with DM are associated with worse cognitive function and greater decline. 5 key findings →
Design: cohort study
Participants: 717
Evidence: moderate
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65/100
✓ Peer-reviewed
alzhub usefulness score 65 out of 100.
·
JAMA Network Open
·
2023-10-02
In this study, terminating metformin treatment was associated with increased dementia incidence. 5 key findings →
Design: cohort
Participants: 41,346
Evidence: moderate
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65/100
✓ Peer-reviewed
alzhub usefulness score 65 out of 100.
·
JAMA Network Open
·
2024-07-01
In this cohort and MR study of UK Biobank participants, cataracts were associated with increased risk of dementia, especially vascular dementia, and reduced total brain volumes. 5 key findings →
Design: cohort
Participants: 304,953
Evidence: moderate
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Female participants had a lower hazard of early-onset dementia compared with males (HR 0·70 [95% CI 0·61-0·80]). 4 key findings →
Design: cohort
Participants: 544,442
Evidence: high
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Observational studies support the use of NSAIDs for prevention of AD, but RCT do not. 4 key findings →
Design: randomized controlled trial
Evidence: high
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Dietary patterns and some dietary components have been linked with dementia. 1 key finding →
Design: meta-analysis
Evidence: high
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65/100
✓ Peer-reviewed
alzhub usefulness score 65 out of 100.
·
JAMA
·
2004-11-01
These findings support the hypothesis that the metabolic syndrome contributes to cognitive impairment in elders, but primarily in those with high level of inflammation. 5 key findings →
Participants: 1,616
Evidence: low
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Older, healthy women with decreased circadian activity rhythm amplitude and robustness, and delayed rhythms have increased odds of developing dementia and MCI. 3 key findings →
Design: cross-sectional
Evidence: moderate
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64/100
✓ Peer-reviewed
alzhub usefulness score 64 out of 100.
·
PLoS medicine
·
2017-03-28
Secondary analysis suggested that this effect may be driven primarily by individuals who are negative for the established AD genetic risk factor, apolipoprotein E (APOE) ɛ4. 5 key findings →
Design: case-control study
Participants: 346
Evidence: moderate
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64/100
✓ Peer-reviewed
alzhub usefulness score 64 out of 100.
·
Sleep
·
2016-09-01
Study objectives Sleep duration has been associated with risk of dementia and stroke, but few studies have investigated the relationship between sleep duration and brain MRI measures, particularly in middle age. 3 key findings →
Design: prospective cohort
Evidence: moderate
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Persistent pain was associated with accelerated memory decline and increased probability of dementia. 5 key findings →
Design: cohort study
Evidence: moderate
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64/100
✓ Peer-reviewed
alzhub usefulness score 64 out of 100.
·
Neurology
·
2026-03-18
Among 283,772 participants (mean [SD] age 64.62 [8.96] years; 56.7% women), 60.3% identified as non-Hispanic White and 13.3% as Hispanic/Latino. 5 key findings →
Design: cohort study
Participants: 283,772
Evidence: moderate
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64/100
✓ Peer-reviewed
alzhub usefulness score 64 out of 100.
·
SLEEP
·
2025-05-16
The pooled sample comprised 4657 participants (30% women) aged ≥ 60 years (mean age was 74 years at sleep assessment). 5 key findings →
Design: cohort study
Participants: 2,374
Evidence: moderate
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64/100
✓ Peer-reviewed
alzhub usefulness score 64 out of 100.
·
Neurology
·
2025-03-19
Of 733 participants (mean age 82.5 ± 2.9 years), 164 (22.4%) developed MCI and 93 (12.7%) developed dementia by the follow-up visit. 5 key findings →
Design: longitudinal study
Participants: 321
Evidence: moderate
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63/100
✓ Peer-reviewed
alzhub usefulness score 63 out of 100.
·
JAMA neurology
·
2017-09-01
Overall, birth in an HSMS was associated with a 28% higher risk of dementia (adjusted hazard ratio [aHR], 1.28; 95% CI, 1.13-1.46) adjusted for age, sex, and race. 5 key findings →
Design: cohort study
Participants: 7,423
Evidence: moderate
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Among patients aged ≥55 years presenting to inpatient/ED settings with trauma, TBI is associated with a 44% increased risk of developing PD over 5 to 7 years that is unlikely to be due to confounding or reverse causation. 4 key findings →
Participants: 52,393
Evidence: low
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63/100
✓ Peer-reviewed
alzhub usefulness score 63 out of 100.
·
Nature aging
·
2021-05-14
The plasma proteomic changes that precede the onset of dementia could yield insights into disease biology and highlight new biomarkers and avenues for intervention. 4 key findings →
Participants: 4,110
Evidence: moderate
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Comorbid cardiovascular and metabolic risk factors (CVM) differentially impact brain structure and increase dementia risk, but their specific magnetic resonance imaging signatures (MRI) remain poorly characterized. 1 key finding →
Design: cohort study
Participants: 37,096
Evidence: moderate
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Researchers analyzed population-based data and relative risks from existing meta-analyses to estimate the population-attributable risk of Alzheimer's disease worldwide, in the USA, Europe, and the UK for seven potentially modifiable risk factors.
Evidence: low
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62/100
✓ Peer-reviewed
alzhub usefulness score 62 out of 100.
·
JAMA neurology
·
2021-02-01
The data set included 18 178 patients, of which 10 991 (60.5%) had MCI and 7187 (39.5%) had dementia (mean [SD] age, 75.8 [6.3] years; 9333 women [51.3%]). 3 key findings →
Design: cross-sectional
Participants: 18
Evidence: low
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Out of 3127 abstracts, 291 were included in the review. 1 key finding →
Evidence: low
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During the 12-year follow-up period, 61 participants (7.8%) had a reported hypoglycemic event, and 148 (18.9%) developed dementia. 3 key findings →
Participants: 783
Evidence: moderate
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Dementia rates varied over 60% between groups, providing a comprehensive benchmark for the NAPA goal of reducing disparities. 2 key findings →
Participants: 18,778
Evidence: low
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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
- Randomized / 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
- Multicenter 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 32,180 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.