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Dementia three months after stroke. Baseline frequency and effect of different definitions of dementia in the Helsinki Stroke Aging Memory Study (SAM) cohort
Pohjasvaara T, Erkinjuntti T, Vataja R, Kaste M.. Stroke, 1997-04-01
Topic: Risk, prevention and care in population studies
Background and purpose Vascular dementia is a common cause of dementia, and cerebrovascular disease is related to a higher risk of dementia. The frequency of dementia associated with ischemic stroke and the effects of different definitions of dementia in the diagnosis are still incompletely known. Results We found that 451 (92.8%) of the patients were testable, 239 (49.2%) of the patients were women, and the mean age was 71.2 years. Compared with standard diagnosis, the DSM-III was the most sensitive and ICD-10 the most specific. Our findings question the validity of current criteria for dementia in the setting of cerebrovascular disease and emphasize the need for further debate and studies to refine the categories of cognitive impairment related to cerebrovascular disease.
Key findings
- Background and purpose Vascular dementia is a common cause of dementia, and cerebrovascular disease is related to a higher risk of dementia.
- The frequency of dementia associated with ischemic stroke and the effects of different definitions of dementia in the diagnosis are still incompletely known.
- Results We found that 451 (92.8%) of the patients were testable, 239 (49.2%) of the patients were women, and the mean age was 71.2 years.
- Compared with standard diagnosis, the DSM-III was the most sensitive and ICD-10 the most specific.
- Our findings question the validity of current criteria for dementia in the setting of cerebrovascular disease and emphasize the need for further debate and studies to refine the categories of cognitive impairment related to cerebrovascular disease.
Study details
- Participants486
- Effect size92.8%; 49.2%; 61.7%
- Evidence strengthModerate
How this study scored 52/100
Published in a peer-reviewed journal. Scored zero for study design 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 | 7 / 10 | Tier 3 — peer-reviewed journal (Stroke) |
| 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 | 1997 — older than 20 years, still counted |
| Sample size | 2 / 4 | 486 participants |
| Effect reported | 2 / 3 | Effect reported as a number, without an interval or test |
| 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 9099197) |
| 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
Pohjasvaara, T., Erkinjuntti, T., Vataja, R., & Kaste, M. (1997). Dementia three months after stroke. Baseline frequency and effect of different definitions of dementia in the Helsinki Stroke Aging Memory Study (SAM) cohort. Stroke. https://doi.org/10.1161/01.str.28.4.785
Vancouver
Pohjasvaara T, Erkinjuntti T, Vataja R, Kaste M. Dementia three months after stroke. Baseline frequency and effect of different definitions of dementia in the Helsinki Stroke Aging Memory Study (SAM) cohort. Stroke. 1997. doi:10.1161/01.str.28.4.785. PMID: 9099197.
BibTeX
@article{pohjasvaara1997-9099197,
author = {Pohjasvaara, T. and Erkinjuntti, T. and Vataja, R. and Kaste, M.},
title = {{Dementia three months after stroke. Baseline frequency and effect of different definitions of dementia in the Helsinki Stroke Aging Memory Study (SAM) cohort}},
journal = {Stroke},
year = {1997},
doi = {10.1161/01.str.28.4.785},
pmid = {9099197},
url = {https://doi.org/10.1161/01.str.28.4.785}
}
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