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Current epidemiology of mild cognitive impairment and other predementia syndromes
Panza F, D'Introno A, Colacicco AM, Capurso C, Del Parigi A, Caselli RJ, Pilotto A, Argentieri G et al.. The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry, 2005-08-01
Topic: Risk, prevention and care in population studies
A variety of clinically-defined predementia syndromes, with differing diagnostic criteria and nomenclature, have been proposed to describe nondisabling symptomatic cognitive deficits arising in elderly persons. Incidence and prevalence of different predementia syndromes vary as a result of different diagnostic criteria, sampling, and assessment procedures. The incidence rates of all predementia syndromes increase with age and are higher in subjects with less education; but age, educational background, and gender are not consistently related to prevalence rates. There is particular interest in "Mild Cognitive Impairment (MCI)" because this predementia syndrome is thought to be a prodromal phase of Alzheimer disease (AD). Several studies have suggested that most patients who meet MCI criteria will progress to AD, but rates of conversion to AD and dementia vary widely among studies. Furthermore, MCI definition is less consistent in population-based studies than clinical studies, in which progression to AD is also more consistent. To clarify the sources of discrepant findings in the literature, this review summarizes existing epidemiological studies of the defined clinical predementia syndromes and their progression to dementia.
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APA 7th
Panza, F., D'Introno, A., Colacicco, A. M., Capurso, C., Del Parigi, A., Caselli, R. J., et al. (2005). Current epidemiology of mild cognitive impairment and other predementia syndromes. The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry. https://doi.org/10.1176/appi.ajgp.13.8.633
Vancouver
Panza F, D'Introno A, Colacicco AM, Capurso C, Del Parigi A, Caselli RJ, et al. Current epidemiology of mild cognitive impairment and other predementia syndromes. The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry. 2005. doi:10.1176/appi.ajgp.13.8.633. PMID: 16085779.
BibTeX
@article{panza2005-16085779,
author = {Panza, F. and D'Introno, A. and Colacicco, A. M. and Capurso, C. and Del Parigi, A. and Caselli, R. J. and Pilotto, A. and Argentieri, G. and others},
title = {{Current epidemiology of mild cognitive impairment and other predementia syndromes}},
journal = {The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry},
year = {2005},
doi = {10.1176/appi.ajgp.13.8.633},
pmid = {16085779},
url = {https://doi.org/10.1176/appi.ajgp.13.8.633}
}
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Key findings
- Incidence and prevalence of different predementia syndromes vary as a result of different diagnostic criteria, sampling, and assessment procedures.
- Several studies have suggested that most patients who meet MCI criteria will progress to AD, but rates of conversion to AD and dementia vary widely among studies.
Why it matters
This review describes how the incidence and prevalence of predementia syndromes like mild cognitive impairment vary depending on diagnostic criteria, sampling, and assessment methods, and how conversion rates to Alzheimer's disease also vary widely. It is an epidemiological review and does not test any treatment, cure, or prevention.
Study details
- Evidence strengthLow
How this study scored 39/100
Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported, studied in people and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry) |
| Journal's citation record | 2 / 4 | American Journal of Geriatric Psychiatry: journal h-index 178 (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 | 2005 — older than 20 years, still counted |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 5 / 7 | Cited 109 times (OpenAlex, 2026-10-10) |
| Citations per year | 2 / 5 | 4.7 citations a year over 23 year(s) since 2005 |
| Impact for its field and year | 3 / 6 | Cited 3.7× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 2 / 6 | Cited by 5 other studies in this library |
| Still being cited | 1 / 4 | Cited 12 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 3 / 4 | Last-listed author Francesco Panza: h-index 92 (OpenAlex, whole career) |
| Institution's track record | 0 / 3 | University of Bari Aldo Moro: institution h-index 586 (OpenAlex) |
| Multi-centre collaboration | 0 / 3 | OpenAlex lists 1 institution(s) in 1 country — scores zero (affiliation lists can be incomplete) |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 16085779) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Total | 39 / 100 | — |
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