Evidence map›Paper›PMID 40716451›Full record

SynthesisInternational journal of geriatric psychiatry2025

Time to Diagnosis in Dementia: A Systematic Review With Meta-Analysis.

Olubunmi Kusoro, Moïse Roche, Rafael Del-Pino-Casado, Phuong Leung, Vasiliki Orgeta

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in International journal of geriatric psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Time to Diagnosis in Dementia: A Systematic Review With Meta-Analysis.International journal of geriatric psychiatry · 2025
    Pooled it
  2. The value of timely treatment with anti-amyloid therapy for Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  3. Primary care determinants for timely diagnosis of dementia.Family medicine and community health · 2026
    Article
  4. Article
  5. Coping Styles Predict Timing of Dementia Diagnosis: Evidence From DETERMIND.International journal of geriatric psychiatry · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Bridging the diagnostic gap: Expanding dementia care navigation for timely diagnosis.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Scientific knowledge about dementia: From the Global South to the world.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Editorial: Real-World Outcomes of Disease-Modifying Therapies Highlight the Need for Diagnostic Biomarkers in Early Alzheimer's Disease.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Olubunmi KusoroFaculty of Brain Sciences, Division of Psychiatry, University College London, London, UK.
Moïse RocheFaculty of Brain Sciences, Division of Psychiatry, University College London, London, UK.ORCID https://orcid.org/0000-0002-0342-9190
Rafael Del-Pino-CasadoFaculty of Health Sciences, Department of Nursing, University of Jaén, Andalusia, Spain.ORCID https://orcid.org/0000-0003-2263-2415
Phuong LeungFaculty of Brain Sciences, Division of Psychiatry, University College London, London, UK.ORCID https://orcid.org/0000-0003-4272-3998
Vasiliki OrgetaFaculty of Brain Sciences, Division of Psychiatry, University College London, London, UK.ORCID https://orcid.org/0000-0001-8643-5061

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Timely dementia diagnosis is a global priority, reflected in most national and regional policies and plans. Nevertheless, there are currently no robust estimates of the average time to diagnosis (TTD) and factors influencing diagnostic intervals. This article presents the first systematic review of quantitative studies on TTD in dementia and the factors associated with its duration. We systematically searched EMBASE, Psych INFO, MEDLINE, and CINAHL databases for relevant studies published up to December 2024. We defined TTD as the interval between symptom onset (rated by family carers or patients using interviews or medical records) to final diagnosis. Risk of bias was assessed using the Reporting studies on time to diagnosis tool. We included 13 studies reporting data on 30,257 participants, with age at onset ranging between 54 and 93 years. Meta-analysis pooling 10 studies showed that average mean TTD across all types of dementia was 3.5 years [confidence interval (CI): 2.7-4.3; moderate quality evidence]. Analyses of six studies showed that TTD in young onset dementia was 4.1 years (CI: 3.4-4.9; moderate quality evidence). Although the factors influencing TTD were inconsistent, a younger age at onset and having frontotemporal dementia were consistently associated with a longer interval to diagnosis. TTD in dementia remains long, and specific healthcare strategies are urgently needed to improve it. Increasing the evidence base and developing interventions to reduce TTD should be a future research priority. Specialist services are likely to be key in improving TTD in young-onset dementia.

Indexed as

Delayed DiagnosisDementiaAgedAged, 80 and overAge of OnsetHumansTime FactorsAlzheimer's diseasedementiadiagnosissymptomstime to diagnosis

Identifiers

PMID40716451
PMCPMC12300619

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.