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Incidence and risk of dementia. The Rotterdam Study
Ott A, Breteler MM, van Harskamp F, Stijnen T, Hofman A.. American journal of epidemiology, 1998-03-01
Topic: Risk, prevention and care in population studies
To assess age-, sex-, and subtype-specific incidence rates of dementia and to calculate the risk of dementia, the authors performed a large, community-based, prospective cohort study on dementia as part of the Rotterdam Study. Participants were recruited among residents of a suburb of Rotterdam, aged 55 years and older. Baseline examinations took place between 1990 and 1993.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Ott, A., Breteler, M. M., van Harskamp, F., Stijnen, T., & Hofman, A. (1998). Incidence and risk of dementia. The Rotterdam Study. American journal of epidemiology. https://doi.org/10.1093/oxfordjournals.aje.a009489
Vancouver
Ott A, Breteler MM, van Harskamp F, Stijnen T, Hofman A. Incidence and risk of dementia. The Rotterdam Study. American journal of epidemiology. 1998. doi:10.1093/oxfordjournals.aje.a009489. PMID: 9521184.
BibTeX
@article{ott1998-9521184,
author = {Ott, A. and Breteler, M. M. and van Harskamp, F. and Stijnen, T. and Hofman, A.},
title = {{Incidence and risk of dementia. The Rotterdam Study}},
journal = {American journal of epidemiology},
year = {1998},
doi = {10.1093/oxfordjournals.aje.a009489},
pmid = {9521184},
url = {https://doi.org/10.1093/oxfordjournals.aje.a009489}
}
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
- Participants were recruited among residents of a suburb of Rotterdam, aged 55 years and older.
- Baseline examinations took place between 1990 and 1993.
- Screening for dementia followed a three-stage protocol.
- Medical records of subjects who had died or could not be examined in person were evaluated.
Why it matters
This Rotterdam Study paper set out "to assess age-, sex-, and subtype-specific incidence rates of dementia" in residents of a Rotterdam suburb aged 55 and older, who were first examined in 1990–1993. People were screened with a three-stage protocol, and medical records were checked for those who died or could not be seen in person. The summary we hold does not include the results, so see the original paper for the rates. Like all incidence studies, it describes how often dementia appears and does not test any treatment or prevention.
Study details
- Study designcohort study
- Participants7,046
- Evidence strengthModerate
How this study scored 64/100
Published in a peer-reviewed journal, and it is a cohort study following people over time. Scored zero for effect reported and randomized / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (American journal of epidemiology) |
| Journal's citation record | 3 / 4 | American Journal of Epidemiology: journal h-index 416 (OpenAlex, 2026-10-29) |
| Study design | 7 / 12 | A cohort study following people over time |
| 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 | 1998 — older than 20 years, still counted |
| Sample size | 3 / 4 | 7,046 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) |
| Randomized / blinded | 0 / 2 | No randomization or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 6 / 7 | Cited 458 times (OpenAlex, 2026-10-10) |
| Citations per year | 3 / 5 | 15.3 citations a year over 30 year(s) since 1998 |
| Impact for its field and year | 4 / 6 | Cited 15.5× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 4 / 6 | Cited by 54 other studies in this library |
| Still being cited | 2 / 4 | Cited 20 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 4 / 4 | Last-listed author Albert Hofman: h-index 207 (OpenAlex, whole career) |
| Institution's track record | 1 / 3 | Erasmus MC: institution h-index 1,321 (OpenAlex) |
| Multicenter collaboration | 1 / 3 | OpenAlex lists 2 institution(s) in 1 country |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 9521184) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Total | 64 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
- DOI: 10.1093/oxfordjournals.aje.a009489
- PubMed: 9521184
- Original source →
- Free full text: American Journal of Epidemiology →
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
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