Home › Research › Prevention and risk
Predicting Subjective Cognitive Decline on Future BRFSS Survey Years: An Open Multi-Language Machine Learning Benchmark
Nguyen, T. T.; Nguyen, T. D.. medRxiv (preprint), 2026-08-21
Topic: Risk, prevention and care in population studies
Respondents who reported no difficulty deciding (DECIDE = 2) had substantially lower odds of SCD than those who reported difficulty (DECIDE = 1; aOR approximately 0.13; FDR < 0.05).
Key findings
- Respondents who reported no difficulty deciding (DECIDE = 2) had substantially lower odds of SCD than those who reported difficulty (DECIDE = 1; aOR approximately 0.13; FDR < 0.05).
Why it matters
This analysis found that respondents who reported no difficulty deciding had much lower odds of subjective cognitive decline than those who reported difficulty. It concerns a survey-based prediction benchmark and does not test any treatment, cure or prevention.
New to this subject? Start with our plain-English guide: Prevention →
Study details
- Study designpost-hoc analysis
- Participants298,944
- Effect sizeAUC 0.770 (95% CI 0.767- 0.773)
- Evidence strengthLow
How this study scored 16/100
Preprint — not yet peer-reviewed. It scored 30 on the same rubric, but non-peer-reviewed sources are capped at 16, so it shows as 16. Scored zero for study design and randomised / blinded because the record does not state it. We have no data on impact for its field and year and senior author's track record, so those were left out: it earned 27 of the 90 points we could judge it on, which is 30 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 2 / 10 | Tier 4 — not a peer-reviewed journal (medRxiv (preprint)) |
| Journal's citation record | 0 / 4 | Not a journal article, so the journal's record does not count |
| Study design | 0 / 12 | Design recorded as “post-hoc analysis”, which our rubric does not rank (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 4 / 10 | Preprint — not yet peer-reviewed. Hosted on a preprint server. |
| How recent | 5 / 5 | 2026 — within 1 year(s) of the newest study here |
| Sample size | 4 / 4 | 298,944 participants |
| Effect reported | 3 / 3 | Effect reported with a statistic (interval, p-value, ratio or similar) |
| 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 | 0 / 7 | Cited 0 times (OpenAlex, 2026-10-10) |
| Citations per year | 0 / 5 | 0.0 citations a year over 2 year(s) since 2026 |
| 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 | 0 / 6 | No other study in this library cites it |
| Still being cited | 0 / 4 | Cited 0 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | — / 4 | OpenAlex's profile for last-listed author Truong D Nguyen holds only 2 work(s), too few to judge a track record — left out of this score |
| Institution's track record | 1 / 3 | Tulane University: institution h-index 735 (OpenAlex) |
| Multi-centre collaboration | 1 / 3 | OpenAlex lists 2 institution(s) in 1 country |
| Indexed in PubMed | 1 / 2 | Not in PubMed, but has a DOI |
| Free to read | 2 / 2 | Free to read |
| Points | 27 / 90 | Scored on 18 of 20 parts. We have no data for the rest, so they are left out: 27 of the 90 points we could judge it on is 30 out of 100. |
| Total | 30 / 100 | Capped to 16 because this is not a peer-reviewed article. |
What each of these 20 components measures, and what this score is not →
Read the original
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
Nguyen, T. T., & Nguyen, T. D. (2026). Predicting Subjective Cognitive Decline on Future BRFSS Survey Years: An Open Multi-Language Machine Learning Benchmark. medRxiv (preprint). https://doi.org/10.64898/2026.08.18.26360709
Vancouver
Nguyen TT, Nguyen TD. Predicting Subjective Cognitive Decline on Future BRFSS Survey Years: An Open Multi-Language Machine Learning Benchmark. medRxiv (preprint). 2026. doi:10.64898/2026.08.18.26360709.
BibTeX
@article{nguyen2026-c42aba5e,
author = {Nguyen, T. T. and Nguyen, T. D.},
title = {{Predicting Subjective Cognitive Decline on Future BRFSS Survey Years: An Open Multi-Language Machine Learning Benchmark}},
journal = {medRxiv (preprint)},
year = {2026},
doi = {10.64898/2026.08.18.26360709},
url = {https://doi.org/10.64898/2026.08.18.26360709}
}
Related studies in Prevention and risk
Also tagged “cognitive-function”
1,118 studies in the library carry the topic tag “cognitive-function”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 1,118 tagged studies.