Evidence map›Paper›PMID 41665071›Full record

Observational studyThe Medical journal of Australia2026

The Association Between Access Block And Ambulance Ramping, And The Impact of COVID-19: A Retrospective Observational Cohort Study of 25 Queensland Hospitals.

Hwan-Jin Yoon, Justin Boyle, Ibrahima Diouf, Emma Bosley, Andrew Staib, Vahid Riahi, Hamed Hassanzadeh, Mahnaz Samadbeik, Clair Sullivan, Sankalp Khanna and 1 more

Abstract readObservational Study
In one paragraph

Observational study in The Medical journal of Australia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Observational
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

11 authors.

Hwan-Jin YoonAustralian e-Health Research Centre, CSIRO, Melbourne, Victoria, Australia.ORCID 0000-0003-1772-7911
Justin BoyleAustralian e-Health Research Centre, CSIRO, Brisbane, Queensland, Australia.
Ibrahima DioufAustralian e-Health Research Centre, CSIRO, Melbourne, Victoria, Australia.
Emma BosleyQueensland Ambulance Service, Brisbane, Queensland, Australia.
Andrew StaibPrincess Alexandra Hospital, Brisbane, Queensland, Australia.
Vahid RiahiAustralian e-Health Research Centre, CSIRO, Melbourne, Victoria, Australia.ORCID 0000-0001-6050-6423
Hamed HassanzadehAustralian e-Health Research Centre, CSIRO, Brisbane, Queensland, Australia.ORCID 0000-0003-2315-1963
Mahnaz SamadbeikQueensland Digital Health Centre, University of Queensland, Brisbane, Queensland, Australia.
Clair SullivanPrincess Alexandra Hospital, Brisbane, Queensland, Australia.
Sankalp KhannaAustralian e-Health Research Centre, CSIRO, Brisbane, Queensland, Australia.
James F LindGold Coast University Hospital, Gold Coast, Queensland, Australia.

Funding

Emergency Medicine FoundationQueensland Ambulance ServiceQueensland Health
6 · The paper itself

Abstract

objectiveTo explore the characteristics of ambulance ramping and its association with access block before, during and after the first wave of the coronavirus disease 2019 (COVID-19) pandemic.

designRetrospective observational study.

settingExploratory data analysis and statistical modelling covering the ambulance-emergency department (ED) interface of the 25 largest public hospitals in Queensland between 1 January 2018 and 31 December 2022.

main outcome measuresPrimary outcome: The association between ramping, assessed as the ambulance performance target patient off-stretcher time (POST) and access block, and how COVID-19 affected these time-sensitive processes. SECONDARY OUTCOMES: The association between POST and ambulance response time and between ramping and ED length of stay.

resultsA significant decline in POST performance was observed across the study period, with the mean difference between pre- and post-COVID-19 periods being 13.1 min (95% CI, 12.9-13.3 min) and 8.9 min (95% CI, 8.7-9.1 min) for Priority 1 and Priority 2 responses, respectively. POST compliance within 30 min dropped from 74% (718,912) pre-COVID-19 to 66% (694,633) during the first wave of COVID-19 and 57% (309,815) post-COVID-19, all below the 90% target. The proportion of patients experiencing access block increased from 10% (91,168) to 17% (87,757) over this same time period. Regression analyses revealed a positive relationship between POST and access block, response time and POST, and ramping and ED length of stay. Before COVID-19, no significant relationship existed between POST and access block for triage category 1 patients, but longer POST was linked to a higher likelihood of access block for categories 2-5. This trend increased across all categories during and post-COVID-19.

conclusionAchieving the POST target of transferring 90% of patients within 30 min is becoming more difficult, with performance declining. The strong association of POST with access block suggests that access block is driving ramping increases. To reduce delays, efforts should focus on improving access to ward beds and managing hospital capacity issues.

Indexed as

AmbulancesCOVID-19Emergency Service, HospitalHospitals, PublicHumansLength of StayQueenslandRetrospective StudiesSARS-CoV-2Time Factorsdelivery of healthcareemergency medicineemergency servicesevidence‐based medicinehealth policyhealth services researchhealth systemshospitalsmedicalstatistical models

Identifiers

PMID41665071
PMCPMC12888069

What OpenQuestion holds

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LicenceCC BY
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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.