Response Times in Danish Emergency Medical Services

NCT06666647 | Active Not Recruiting

• 1 other identifier: AHRTEMIS.PROTOCOL.PMH
• Study Type: observational
• Target: 2,500,000
• Locations: 1 country
• Sites: 1

Brief Summary

The overall aim of this retrospective observational study is to investigate the association of emergency medical services response time with patient survival and treatment outcomes. The main question it aims to answer is: What is the association between response time and patient survival? The investigators will collect data for all patients who were treated by ambulance and/or helicopter services in Denmark and follow the patient's path from illness or injury to discharge from hospital with a focus on the significance of ambulance and helicopter response time.

Conditions

Emergency Medical Services; Response; Triage; Survival Outcomes; Intensive Care Unit Days; Intensive Care Patients Invasively Ventilated

Keywords

emergency medical services; response time; intensive care unit treatment; ventilator days

Outcome Measures

Primary Outcomes (1)

• 30-day survival

  Patient is alive 30 days after hospital admission

  Status at 30 days after hospital admission

Secondary Outcomes (5)

• 24 hour survival

  Status at 24 hours after hospital admission

• 48 hour survival

  Status at 48 hours after hospital admission

• 7-day survival

  Status at seven days after hospital admission

• 90-day survival

  Status at 90 days after hospital admission

• Survival to hospital discharge

  Status at hospital discharge, assessed up to 5 days

Other Outcomes (12)

• Length of hospital stay

  From hospital admission to hospital discharge, up to one year after enrollment

• Days in ICU

  From admission to intensive care unit until discharge from intensive care unit, up to one year after enrollment

• Ventilator days

  From admission to intensive care unit until discharge from intensive care unit, up to one year after enrollment

Study Arms (1)

Patients in need of treatment by emergency medical services

All patients in Denmark to whom an ambulance or helicopter has been disapatched

Procedure: Treatment by ambulance or helicopter services with response times

Interventions

Treatment by ambulance or helicopter services with response times PROCEDURE

Prehospital treatment by ambulance and/or helicopter services personnel of patients in acute conditions

Patients in need of treatment by emergency medical services

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Every patient in Denmark in need of ambulance and/or helicopter services treatment from 2016 to 2022 with one year follow-up

You may not qualify if:

• No civil personal registration number available
• Patient not identified
• Patient not entered in the prehospital electronic patient journal
• invalid data entered
• No linkage between substitue personal register number and actual personal register number for patients identified later;

Sponsors & Collaborators

• Peter Martin Hansen: lead
• University of Southern Denmark: collaborator

Study Sites (1)

Odense University Hospital

Odense, 5000, Denmark

Location

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Related Links

• Website of the AHRTEMIS project

MeSH Terms

Interventions

Reaction Time

Intervention Hierarchy (Ancestors)

Psychological Techniques; Investigative Techniques; Behavioral Disciplines and Activities; Nervous System Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: MD. PhD student

Study Record Dates

• First Submitted: October 22, 2024
• First Posted: October 30, 2024
• Study Start: May 1, 2025
• Primary Completion: March 30, 2026
• Study Completion (Estimated): December 31, 2026
• Last Updated: December 30, 2025

Record last verified: 2025-12

Data Sharing

• IPD Sharing: Will not share

Locations

DK (1)