Evidence map›Paper›PMID 38605384›Full record

SynthesisOrphanet journal of rare diseases2024

Diagnostic delay of sarcoidosis: an integrated systematic review.

Tergel Namsrai, Christine Phillips, Anne Parkinson, Dianne Gregory, Elaine Kelly, Matthew Cook, Jane Desborough

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Orphanet journal of rare diseases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.9field-weighted citation impact, top 6% of its field
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

14 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. The Diagnostic Course of Sarcoidosis: A Population-Based Study Highlighting Risk Factors for a Delay in Diagnosis.Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG · 2026
    Article
  4. Article
  5. Observational
  6. Review
  7. Article
  8. Review
  9. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article
  10. Neurosarcoidosis presenting as possible normal pressure hydrocephalus in a 71-year-old man.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. 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

7 authors at 1 institution in 1 country.

Tergel NamsraiNational Centre for Epidemiology and Population Health, The Australian National University, 63, Eggleston Road, Acton ACT, Canberra, 2601, Australia.
Christine PhillipsSchool of Medicine and Psychology, The Australian National University, Canberra, Australia.
Anne ParkinsonNational Centre for Epidemiology and Population Health, The Australian National University, 63, Eggleston Road, Acton ACT, Canberra, 2601, Australia.
Dianne GregoryNational Centre for Epidemiology and Population Health, The Australian National University, 63, Eggleston Road, Acton ACT, Canberra, 2601, Australia.
Elaine KellyNational Centre for Epidemiology and Population Health, The Australian National University, 63, Eggleston Road, Acton ACT, Canberra, 2601, Australia.
Matthew CookJohn Curtin School of Medical Research, The Australian National University, Canberra, Australia.
Jane DesboroughNational Centre for Epidemiology and Population Health, The Australian National University, 63, Eggleston Road, Acton ACT, Canberra, 2601, Australia. jane.desborough@anu.edu.au.ORCID 0000-0003-1406-4593
Australian National University · AU

Funding

Department of Health and Aged Care, Australian Government ID 4-G5ZN0T7
6 · The paper itself

Abstract

backgroundSarcoidosis is a chronic inflammatory granulomatous disease of unknown cause. Delays in diagnosis can result in disease progression and poorer outcomes for patients. Our aim was to review the current literature to determine the overall diagnostic delay of sarcoidosis, factors associated with diagnostic delay, and the experiences of people with sarcoidosis of diagnostic delay.

methodsThree databases (PubMed/Medline, Scopus, and ProQuest) and grey literature sources were searched. Random effects inverse variance meta-analysis was used to pool mean diagnostic delay in all types of sarcoidosis subgroup analysis. Diagnostic delay was defined as the time from reported onset of symptoms to diagnosis of sarcoidosis.

resultsWe identified 374 titles, of which 29 studies were included in the review, with an overall sample of 1531 (694 females, 837 males). The overall mean diagnostic delay in all types of sarcoidosis was 7.93 months (95% CI 1.21 to 14.64 months). Meta-aggregation of factors related to diagnostic delay in the included studies identified three categories: (1) the complex and rare features of sarcoidosis, (2) healthcare factors and (3) patient-centred factors. Meta-aggregation of outcomes reported in case studies revealed that the three most frequent outcomes associated with diagnostic delay were: (1) incorrect diagnosis, (2) incorrect treatment and (3) development of complications/disease progression. There was no significant difference in diagnostic delay between countries with gatekeeper health systems (where consumers are referred from a primary care clinician to specialist care) and countries with non-gatekeeper systems. No qualitative studies examining people's experiences of diagnostic delay were identified.

conclusionThe mean diagnostic delay for sarcoidosis is almost 8 months, which has objective consequences for patient management. On the other hand, there is a paucity of evidence about the experience of diagnostic delay in sarcoidosis and factors related to this. Gaining an understanding of people's experiences while seeking a diagnosis of sarcoidosis is vital to gain insight into factors that may contribute to delays, and subsequently inform strategies, tools and training activities aimed at increasing clinician and public awareness about this rare condition.

trial registrationPROSPERO Registration number: CRD42022307236.

Indexed as

Delayed DiagnosisSarcoidosisDisease ProgressionFemaleHumansMaleQualitative ResearchDiagnostic delayMeta-aggregationMeta-analysisMisdiagnosisRare diseaseSarcoidosisSystematic review

Identifiers

PMID38605384
PMCPMC11010435
OpenAlexW4394713678

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.