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54/100

✓ Peer-reviewed alzhub usefulness score 54 out of 100. Health systems and care delivery

Topic: Risk, prevention and care in population studies

For VA and Medicare cohorts, dementia diagnosis was absent in 88.7% and 80.5%, respectively, of follow-up encounters in the other system. For the VA cohort, the diagnosis was absent in 89.2% and 71.8% of TM and MA encounters, respectively. Encounters with a psychiatrist or neurologist (vs. primary care physician) were linked to lower absence during follow-up (eg, 25.3 and 20.3 percentage points lower for the VA cohort during Medicare follow-up; P <0.001 for both); those in TM (vs. MA) were 14.5 percentage points more likely to have an absent diagnosis. Absent dementia diagnoses across VA and Medicare among dual users was common, associated with clinician specialty and Medicare type.

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

APA 7th

Lei, L., Krein, S. L., Petzold, K., Kim, H. M., Intrator, O., Van Houtven, C. H., et al. (2026). Consistency of a Dementia Diagnosis Between Systems for Patients Receiving Care Through the VA, Traditional Medicare, and Medicare Advantage. Medical Care. https://doi.org/10.1097/mlr.0000000000002342

Vancouver

Lei L, Krein SL, Petzold K, Kim HM, Intrator O, Van Houtven CH, et al. Consistency of a Dementia Diagnosis Between Systems for Patients Receiving Care Through the VA, Traditional Medicare, and Medicare Advantage. Medical Care. 2026. doi:10.1097/mlr.0000000000002342. PMID: 42240107.

BibTeX

@article{lei2026-42240107,
  author  = {Lei, Lianlian and Krein, Sarah L. and Petzold, Kierstdea and Kim, Hyungjin Myra and Intrator, Orna and Van Houtven, Courtney H. and Min, Lillian C. and Strominger, Julie and others},
  title   = {{Consistency of a Dementia Diagnosis Between Systems for Patients Receiving Care Through the VA, Traditional Medicare, and Medicare Advantage}},
  journal = {Medical Care},
  year    = {2026},
  doi     = {10.1097/mlr.0000000000002342},
  pmid    = {42240107},
  url     = {https://doi.org/10.1097/mlr.0000000000002342}
}

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Key findings

For VA and Medicare cohorts, dementia diagnosis was absent in 88.7% and 80.5%, respectively, of follow-up encounters in the other system.
For the VA cohort, the diagnosis was absent in 89.2% and 71.8% of TM and MA encounters, respectively.
Encounters with a psychiatrist or neurologist (vs. primary care physician) were linked to lower absence during follow-up (eg, 25.3 and 20.3 percentage points lower for the VA cohort during Medicare follow-up; P <0.001 for both); those in TM (vs.
MA) were 14.5 percentage points more likely to have an absent diagnosis.
Absent dementia diagnoses across VA and Medicare among dual users was common, associated with clinician specialty and Medicare type.

Why it matters

This study looked at how often dementia diagnoses were missing across VA, traditional Medicare and Medicare Advantage records for patients using more than one system. It found diagnoses were frequently absent in the other system's records, which is about record consistency rather than treating or curing dementia.

Study details

Study designcohort study
Participants68,092
Effect size88.7%; 80.5%; 89.2%
Evidence strengthModerate

How this study scored 54/100

Published in a peer-reviewed journal, and it is a cohort study following people over time. Scored zero for randomised / blinded because the record does not state it.

Component	Points	Why
Journal tier	7 / 10	Tier 3 — peer-reviewed journal (Medical Care)
Journal's citation record	3 / 4	Medical Care: journal h-index 273 (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	5 / 5	2026 — within 1 year(s) of the newest study here
Sample size	4 / 4	68,092 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	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	0 / 6	Cited 0.0× the average for papers of its field and year (OpenAlex FWCI)
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	2 / 4	Last-listed author Donovan T. Maust: h-index 35 (OpenAlex, whole career)
Institution's track record	2 / 3	University of Michigan: institution h-index 2,240 (OpenAlex)
Multi-centre collaboration	2 / 3	OpenAlex lists 8 institution(s) in 1 country
Indexed in PubMed	2 / 2	Indexed in PubMed (PMID 42240107)
Free to read	2 / 2	Free to read
Total	54 / 100	—

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