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The prevalence of frontotemporal dementia
Ratnavalli E, Brayne C, Dawson K, Hodges JR.. Neurology, 2002-06-01
Topic: Risk, prevention and care in population studies
Objective To estimate the prevalence of frontotemporal dementia (FTD) and other degenerative early-onset dementias in a geographically defined population. Background Early-onset dementia (at age Methods Case ascertainment was by review of case records of three specialist clinic databases and inpatient admissions at a university hospital in Cambridge, United Kingdom, for patients with dementia who were Results A total of 108 patients (66 men and 42 women) with dementia with onset before they were 65 years of age were identified, of whom 60 were Conclusions Frontotemporal dementia is a more common cause of early-onset dementia than previously recognized and appears to be more common in men.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Ratnavalli, E., Brayne, C., Dawson, K., & Hodges, JR. (2002). The prevalence of frontotemporal dementia. Neurology. https://doi.org/10.1212/wnl.58.11.1615
Vancouver
Ratnavalli E, Brayne C, Dawson K, Hodges JR. The prevalence of frontotemporal dementia. Neurology. 2002. doi:10.1212/wnl.58.11.1615. PMID: 12058088.
BibTeX
@article{ratnavalli2002-12058088,
author = {Ratnavalli, E. and Brayne, C. and Dawson, K. and Hodges, JR.},
title = {{The prevalence of frontotemporal dementia}},
journal = {Neurology},
year = {2002},
doi = {10.1212/wnl.58.11.1615},
pmid = {12058088},
url = {https://doi.org/10.1212/wnl.58.11.1615}
}
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Key findings
- Background Early-onset dementia (at age Methods Case ascertainment was by review of case records of three specialist clinic databases and inpatient admissions at a university hospital in Cambridge, United Kingdom, for patients with dementia who were Results A total of 108 patients (66 men and 42 wom
Why it matters
This study estimated the prevalence of frontotemporal dementia and other degenerative early-onset dementias in a defined population and found frontotemporal dementia to be a more common cause of early-onset dementia than previously recognized. It concerns prevalence and diagnosis only and reports no treatment, cure, or prevention.
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Study details
- Participants108
- Evidence strengthLow
How this study scored 60/100
Published in a leading specialty journal. Scored zero for study design, effect reported and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 9 / 10 | Tier 2 — leading specialty journal (Neurology) |
| Journal's citation record | 4 / 4 | Neurology: journal h-index 525 (OpenAlex, 2026-10-29) |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2002 — older than 20 years, still counted |
| Sample size | 2 / 4 | 108 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 / 7 | Cited 1,162 times (OpenAlex, 2026-10-10) |
| Citations per year | 4 / 5 | 44.7 citations a year over 26 year(s) since 2002 |
| Impact for its field and year | 4 / 6 | Cited 18.7× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 4 / 6 | Cited by 57 other studies in this library |
| Still being cited | 3 / 4 | Cited 71 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 2 / 4 | Last-listed author J. R. Hodges: h-index 49 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | University of Cambridge: institution h-index 1,973 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 5 institution(s) in 2 countries |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 12058088) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Total | 60 / 100 | — |
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