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[Validation of a screening test for age associated cognitive impairment, in Chile]
Quiroga P, Albala C, Klaasen G.. Revista medica de Chile, 2004-04-01
Topic: Risk, prevention and care in population studies
Background The real prevalence of dementia in a given population must be determined through prevalence studies, using validated screening tests. Aim To validate and determine cutoff points for a cognitive impairment screening test composed by the Folstein Mini Mental State Examination (MMSE) and Pfeffer Functional Activities Questionnaire (PFAQ). Material and methods Validation of the diagnostic test in a sample of 100 subjects over 65 years old (85 from the project "Age associated dementias" and 15 with a confirmed diagnosis of dementia).
Key findings
- Aim To validate and determine cutoff points for a cognitive impairment screening test composed by the Folstein Mini Mental State Examination (MMSE) and Pfeffer Functional Activities Questionnaire (PFAQ).
- Material and methods Validation of the diagnostic test in a sample of 100 subjects over 65 years old (85 from the project "Age associated dementias" and 15 with a confirmed diagnosis of dementia).
- All were subjected to a complete neuropsychological test by a trained neurologist, that constituted the "gold standard" for the diagnosis of dementia.
- An independent interviewer applied the MMSE to the subjects and the PFAQ to a next of kin informer.
Why it matters
This study validated a cognitive screening test combining the Mini Mental State Examination and Pfeffer Functional Activities Questionnaire in 100 people over 65 in Chile. It is about diagnosing cognitive impairment, not about treating, curing, or preventing Alzheimer's disease.
Study details
- Participants100
- Effect size93.6%; 99.7%; 46.1%
- Evidence strengthLow
How this study scored 45/100
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 senior author's track record, so that was left out: it earned 43 of the 96 points we could judge it on, which is 45 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Revista medica de Chile) |
| Journal's citation record | 0 / 4 | Revista médica de Chile: journal h-index 56 (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 | 2004 — older than 20 years, still counted |
| Sample size | 2 / 4 | 100 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 | 5 / 7 | Cited 207 times (OpenAlex, 2026-10-10) |
| Citations per year | 3 / 5 | 8.6 citations a year over 24 year(s) since 2004 |
| Impact for its field and year | 2 / 6 | Cited 1.9× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 2 / 6 | Cited by 4 other studies in this library |
| Still being cited | 2 / 4 | Cited 32 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | — / 4 | OpenAlex's profile for last-listed author Gonzalo Klaasen P holds only 2 work(s), too few to judge a track record — left out of this score |
| Institution's track record | 0 / 3 | University of Chile: institution h-index 541 (OpenAlex) |
| Multi-centre collaboration | 1 / 3 | OpenAlex lists 2 institution(s) in 1 country |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 15382519) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 43 / 96 | Scored on 19 of 20 parts. We have no data for the rest, so they are left out: 43 of the 96 points we could judge it on is 45 out of 100. |
| Total | 45 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
- DOI: 10.4067/s0034-98872004000400009
- PubMed: 15382519
- Original source →
- Free full text: Revista médica de Chile →
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
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.
APA 7th
Quiroga, P., Albala, C., & Klaasen, G. (2004). [Validation of a screening test for age associated cognitive impairment, in Chile]. Revista medica de Chile. https://doi.org/10.4067/s0034-98872004000400009
Vancouver
Quiroga P, Albala C, Klaasen G. [Validation of a screening test for age associated cognitive impairment, in Chile]. Revista medica de Chile. 2004. doi:10.4067/s0034-98872004000400009. PMID: 15382519.
BibTeX
@article{quiroga2004-15382519,
author = {Quiroga, P. and Albala, C. and Klaasen, G.},
title = {{[Validation of a screening test for age associated cognitive impairment, in Chile]}},
journal = {Revista medica de Chile},
year = {2004},
doi = {10.4067/s0034-98872004000400009},
pmid = {15382519},
url = {https://doi.org/10.4067/s0034-98872004000400009}
}
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