Evidence map›Paper›PMID 34814782›Full record

SynthesisJournal of primary care & community health

Age-Adjusted D-Dimer in the Prediction of Pulmonary Embolism: Systematic Review and Meta-analysis.

Kenneth Iwuji, Hasan Almekdash, Kenneth M Nugent, Ebtesam Islam, Briget Hyde, Jonathan Kopel, Adaugo Opiegbe, Duke Appiah

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of primary care & community health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 7% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Raising the D-dimer bar: a narrative review of the age-adjusted D-dimer threshold.Research and practice in thrombosis and haemostasis · 2026
    Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
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

8 authors at 2 institutions in 2 countries.

Kenneth IwujiTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.ORCID 0000-0001-5489-233X
Hasan AlmekdashTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.
Kenneth M NugentTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.ORCID 0000-0003-2781-4816
Ebtesam IslamTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.
Briget HydeTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.
Jonathan KopelTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.
Adaugo OpiegbeUniversity of Benin, Edo State, Benin City, Edo, Nigeria.
Duke AppiahTexas Tech University Health Sciences Center Lubbock, Lubbock, TX, USA.
Texas Tech University · USUniversity of Benin · NG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPulmonary embolism (PE), depending on the severity, carries a high mortality and morbidity. Proper evaluation, especially in patients with low probability for PE, is important to avoid unnecessary diagnostic testing.

objectiveTo review the diagnostic utility of conventional versus age-adjusted D-dimer cutoff values in patients 50 years and older with suspected pulmonary embolism.

methodsSystematic review with univariant and bivariant meta-analysis. DATA SOURCES: We searched PubMed, MEDLINE, and EBSCO for studies published before September 20th, 2020. We cross checked the reference list of relevant studies that compares conventional versus age-adjusted D-dimer cutoff values in patients with suspected pulmonary embolism. STUDY SELECTION: We included primary published studies that compared both conventional (500 µg/L) and age-adjusted (age × 10 µg/L) cutoff values in patients with non-high clinical probability for pulmonary embolism.

resultsNine cohorts that included 47 720 patients with non-high clinical probability were included in the meta-analysis. Both Age-adjusted D-dimer and conventional D-dimer have high sensitivity. However, conventional D-dimer has higher false positive rate than age-adjusted D-dimer.

conclusionAge-adjusted D-dimer cutoffs combined with low risk clinical probability assessment ruled out PE diagnosis in suspected patients with a decreased rate of false positive tests.

Indexed as

Fibrin Fibrinogen Degradation ProductsPulmonary EmbolismAge FactorsHumansMiddle AgedProbabilityFibrin Fibrinogen Degradation Productsfibrin fragment Dage-adjusted D-dimerD-dimerdeep vein thrombosispulmonary embolism

Identifiers

PMID34814782
PMCPMC8640977
OpenAlexW3214943953

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.