Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial

Objectives In the TRIAGE trial, a cluster randomised trial about diverting emergency department (ED) patients to a general practice cooperative (GPC) using a new extension to the Manchester Triage System, the difference in the proportion of patients assigned to the GPC was striking: 13.3% in the int...

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Main Authors: Hilde Philips, Veronique Verhoeven, Stefan Morreel, Jasmine Meysman, Ines Homburg, Diana De Graeve, KG Monsieurs
Format: Article
Language:English
Published: BMJ Publishing Group 2022-07-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/12/7/e059173.full
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author Hilde Philips
Veronique Verhoeven
Stefan Morreel
Jasmine Meysman
Ines Homburg
Diana De Graeve
KG Monsieurs
author_facet Hilde Philips
Veronique Verhoeven
Stefan Morreel
Jasmine Meysman
Ines Homburg
Diana De Graeve
KG Monsieurs
author_sort Hilde Philips
collection DOAJ
description Objectives In the TRIAGE trial, a cluster randomised trial about diverting emergency department (ED) patients to a general practice cooperative (GPC) using a new extension to the Manchester Triage System, the difference in the proportion of patients assigned to the GPC was striking: 13.3% in the intervention group (patients were encouraged to comply to an ED or GPC assignment, real-world setting) and 24.7% in the control group (the assignment was not communicated, all remained at the ED, simulated setting). In this secondary analysis, we assess the differences in the use of the triage tool between intervention and control group and differences in costs and hospitalisations for patients assigned to the GPC.Setting ED of a general hospital and the adjacent GPC.Participants 8038 patients (6294 intervention and 1744 control).Primary and secondary outcome measures proportion of patients with triage parameters (reason for encounter, discriminator and urgency category) leading to an assignment to the ED, proportion of patients for which the computer-generated GPC assignment was overruled, motivations for choosing certain parameters, costs (invoices) and hospitalisations.Results An additional 3.1% (p<0.01) of the patients in the intervention group were classified as urgent. Discriminators leading to the ED were registered for an additional 16.2% (p<0.01), mainly because of a perceived need for imaging. Nurses equally chose flow charts leading to the ED (p=0.41) and equally overruled the protocol (p=0.91). In the intervention group, the mean cost for patients assigned to the GPC was €23 (p<0.01) lower and less patients with an assignment to the GPC were hospitalised (1.0% vs 1.6%, p<0.01).Conclusion Nurses used a triage tool more risk averse when it was used to divert patients to primary care as compared with a theoretical assignment to primary care. Outcomes from a simulated setting should not be extrapolated to real patients.Trial registration number NCT03793972.
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spelling doaj-art-10ca5408fc86484990bd147497a30b4a2025-01-31T02:40:09ZengBMJ Publishing GroupBMJ Open2044-60552022-07-0112710.1136/bmjopen-2021-059173Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trialHilde Philips0Veronique Verhoeven1Stefan Morreel2Jasmine Meysman3Ines Homburg4Diana De Graeve5KG Monsieurs6Department of Family and Population Health, University of Antwerp Faculty of Medicine and Health Sciences, Antwerpen, BelgiumDepartment of Family and Population Health, University of Antwerp Faculty of Medicine and Health Sciences, Antwerpen, BelgiumDepartment of Family and Population Health, University of Antwerp Faculty of Medicine and Health Sciences, Antwerpen, BelgiumDepartment of Economics, University of Antwerp, Antwerpen, BelgiumDepartment of Economics, University of Antwerp, Antwerpen, BelgiumDepartment of Economics, University of Antwerp, Antwerpen, BelgiumEmergency Department, Universitair Ziekenhuis Antwerpen, Edegem, BelgiumObjectives In the TRIAGE trial, a cluster randomised trial about diverting emergency department (ED) patients to a general practice cooperative (GPC) using a new extension to the Manchester Triage System, the difference in the proportion of patients assigned to the GPC was striking: 13.3% in the intervention group (patients were encouraged to comply to an ED or GPC assignment, real-world setting) and 24.7% in the control group (the assignment was not communicated, all remained at the ED, simulated setting). In this secondary analysis, we assess the differences in the use of the triage tool between intervention and control group and differences in costs and hospitalisations for patients assigned to the GPC.Setting ED of a general hospital and the adjacent GPC.Participants 8038 patients (6294 intervention and 1744 control).Primary and secondary outcome measures proportion of patients with triage parameters (reason for encounter, discriminator and urgency category) leading to an assignment to the ED, proportion of patients for which the computer-generated GPC assignment was overruled, motivations for choosing certain parameters, costs (invoices) and hospitalisations.Results An additional 3.1% (p<0.01) of the patients in the intervention group were classified as urgent. Discriminators leading to the ED were registered for an additional 16.2% (p<0.01), mainly because of a perceived need for imaging. Nurses equally chose flow charts leading to the ED (p=0.41) and equally overruled the protocol (p=0.91). In the intervention group, the mean cost for patients assigned to the GPC was €23 (p<0.01) lower and less patients with an assignment to the GPC were hospitalised (1.0% vs 1.6%, p<0.01).Conclusion Nurses used a triage tool more risk averse when it was used to divert patients to primary care as compared with a theoretical assignment to primary care. Outcomes from a simulated setting should not be extrapolated to real patients.Trial registration number NCT03793972.https://bmjopen.bmj.com/content/12/7/e059173.full
spellingShingle Hilde Philips
Veronique Verhoeven
Stefan Morreel
Jasmine Meysman
Ines Homburg
Diana De Graeve
KG Monsieurs
Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
BMJ Open
title Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
title_full Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
title_fullStr Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
title_full_unstemmed Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
title_short Differences in emergency nurse triage between a simulated setting and the real world, post hoc analysis of a cluster randomised trial
title_sort differences in emergency nurse triage between a simulated setting and the real world post hoc analysis of a cluster randomised trial
url https://bmjopen.bmj.com/content/12/7/e059173.full
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