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Occurrence and Progression of Dementia in a Community Population Aged 75 Years and Older
Zhenchao Guo, Laura Fratiglioni, Li Zhu, Johan Fastbom, Bengt G. Winblad, Matti H. Viitanen. Archives of Neurology, 1999-08-01
Topic: Drug trials: efficacy and safety
Plain-language summary
Subjects taking antihypertensive medication (n = 651, 83.9% of whom took diuretics) had a lower prevalence of dementia than those not taking antihypertensive medication (P<.001). Subjects without dementia who were taking antihypertensive medication at baseline (n = 584) had a reduced incidence of dementia (adjusted relative risk, 0.7; 95% confidence interval, 0.6-1.0; P = .03). Furthermore, subjects taking diuretics (n = 484) had an adjusted relative risk of 0.7 (95% confidence interval, 0.5-1.0; P = .02) for all dementia, and subjects taking diuretic monotherapy (n = 345) had an adjusted relative risk of 0.6 (95% confidence interval, 0.4-0.9; P = .006). The use of other antihypertensive medication (calcium antagonists or beta-blockers), however, was related to a reduced risk of Alzheimer disease (adjusted relative risk, 0.6; 95% confidence interval, 0.3-1.2) only in the subpopulation with a higher baseline blood pressure (n = 458). Patients with dementia at baseline who were not taking diuretics had a 2-fold faster rate of decline in the score on the Mini-Mental State Examination than those taking diuretics. The use of diuretics may protect against dementia in elderly persons.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Guo, Z., Fratiglioni, L., Zhu, L., Fastbom, J., Winblad, B. G., & Viitanen, M. H. (1999). Occurrence and Progression of Dementia in a Community Population Aged 75 Years and Older. Archives of Neurology. https://doi.org/10.1001/archneur.56.8.991
Vancouver
Guo Z, Fratiglioni L, Zhu L, Fastbom J, Winblad BG, Viitanen MH. Occurrence and Progression of Dementia in a Community Population Aged 75 Years and Older. Archives of Neurology. 1999. doi:10.1001/archneur.56.8.991. PMID: 10448805.
BibTeX
@article{guo1999-10448805,
author = {Guo, Zhenchao and Fratiglioni, Laura and Zhu, Li and Fastbom, Johan and Winblad, Bengt G. and Viitanen, Matti H.},
title = {{Occurrence and Progression of Dementia in a Community Population Aged 75 Years and Older}},
journal = {Archives of Neurology},
year = {1999},
doi = {10.1001/archneur.56.8.991},
pmid = {10448805},
url = {https://doi.org/10.1001/archneur.56.8.991}
}
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.
Key findings
- Subjects taking antihypertensive medication (n = 651, 83.9% of whom took diuretics) had a lower prevalence of dementia than those not taking antihypertensive medication (P<.001).
- Subjects without dementia who were taking antihypertensive medication at baseline (n = 584) had a reduced incidence of dementia (adjusted relative risk, 0.7; 95% confidence interval, 0.6-1.0; P = .03).
- Furthermore, subjects taking diuretics (n = 484) had an adjusted relative risk of 0.7 (95% confidence interval, 0.5-1.0; P = .02) for all dementia, and subjects taking diuretic monotherapy (n = 345) had an adjusted relative risk of 0.6 (95% confidence interval, 0.4-0.9; P = .006).
- The use of other antihypertensive medication (calcium antagonists or beta-blockers), however, was related to a reduced risk of Alzheimer disease (adjusted relative risk, 0.6; 95% confidence interval, 0.3-1.2) only in the subpopulation with a higher baseline blood pressure (n = 458).
- Patients with dementia at baseline who were not taking diuretics had a 2-fold faster rate of decline in the score on the Mini-Mental State Examination than those taking diuretics.
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Study details
- Participants651
- Effect size83.9%
- Evidence strengthModerate
How this study scored 52/100
Published in a peer-reviewed journal. Scored zero for study design and randomized / 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 multicenter 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 (Archives of 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 | 1999 — older than 20 years, still counted |
| Sample size | 2 / 4 | 651 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) |
| Randomized / blinded | 0 / 2 | No randomization 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 |
| Multicenter collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 10448805) |
| 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 | — |
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