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Dementia after ischemic stroke: a population-based study in Rochester, Minnesota (1960-1984)
Kokmen E, Whisnant JP, O'Fallon WM, Chu CP, Beard CM.. Neurology, 1996-01-01
Topic: Risk, prevention and care in population studies
We used the medical records linkage system for the population of Rochester, Minnesota, to identify persons in the community who had their first cerebral infarct without previous dementia. In this cohort (n = 971), the incidence of dementia in the first year was nine times greater than expected, but if we did not observe dementia in the first year, the risk of dementia in the cohort each year thereafter was about twice the risk in the population. After the first year, a 50% increase was observed in Alzheimer's disease in the cohort compared with that in the community. Although the incidence of dementia increased with increasing age, the standardized morbidity ratios decreased with increasing age. Age, sex (male), and second stroke were significant independent predictors of dementia in a multivariate Cox proportional hazards model. There was no effect of location or clinical severity of infarct on the rate of occurrence of dementia.
Key findings
- After the first year, a 50% increase was observed in Alzheimer's disease in the cohort compared with that in the community.
- Age, sex (male), and second stroke were significant independent predictors of dementia in a multivariate Cox proportional hazards model.
Study details
- Participants971
- Evidence strengthModerate
How this study scored 52/100
Published in a leading specialty journal. Scored zero for study design, effect reported and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 30 of the 58 points we could judge it on, which is 52 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (Neurology) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 1996 — older than 20 years, still counted |
| Sample size | 2 / 4 | 971 participants |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 8559366) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 30 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 30 of the 58 points we could judge it on is 52 out of 100. |
| Total | 52 / 100 | — |
What each of these 20 components measures, and what this score is not →
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Cite this study APA, Vancouver, BibTeX · download .bib or .ris
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APA 7th
Kokmen, E., Whisnant, J. P., O'Fallon, W. M., Chu, C. P., & Beard, C. M. (1996). Dementia after ischemic stroke: a population-based study in Rochester, Minnesota (1960-1984). Neurology. https://doi.org/10.1212/wnl.46.1.154
Vancouver
Kokmen E, Whisnant JP, O'Fallon WM, Chu CP, Beard CM. Dementia after ischemic stroke: a population-based study in Rochester, Minnesota (1960-1984). Neurology. 1996. doi:10.1212/wnl.46.1.154. PMID: 8559366.
BibTeX
@article{kokmen1996-8559366,
author = {Kokmen, E. and Whisnant, J. P. and O'Fallon, W. M. and Chu, C. P. and Beard, C. M.},
title = {{Dementia after ischemic stroke: a population-based study in Rochester, Minnesota (1960-1984)}},
journal = {Neurology},
year = {1996},
doi = {10.1212/wnl.46.1.154},
pmid = {8559366},
url = {https://doi.org/10.1212/wnl.46.1.154}
}