Evidence map›Paper›PMID 33361171›Full record

Observational studyBMJ open2020

Changes in demand for emergency ambulances during a nationwide lockdown that resulted in elimination of COVID-19: an observational study from New Zealand.

Bridget Dicker, Andrew Swain, Verity Frances Todd, Bronwyn Tunnage, Emma McConachy, Haydn Drake, Michelle Brett, Dan Spearing, Graham John Howie

Open access · goldAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.8field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 34 citations in OpenAlex.

  1. Observational
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  15. COVID-19 Pandemic Lockdown and Wellbeing: Experiences from Aotearoa New Zealand in 2020.International journal of environmental research and public health · 2022
    Article
  16. Article
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  18. Prehospital characteristics of COVID-19 patients in Helsinki - experience of the first wave of the pandemic.Scandinavian journal of trauma, resuscitation and emergency medicine · 2021
    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

9 authors at 2 institutions in 1 country.

Bridget DickerParamedicine Department, Auckland University of Technology, Auckland, New Zealand bridget.dicker@stjohn.org.nz.ORCID http://orcid.org/0000-0002-8151-7356
Andrew SwainParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-8599-8820
Verity Frances ToddParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-4786-8272
Bronwyn TunnageParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-6554-3634
Emma McConachyParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-0619-6916
Haydn DrakeParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-0191-2258
Michelle BrettClinical Audit and Research, St John New Zealand, Auckland, New Zealand.ORCID http://orcid.org/0000-0003-0053-0290
Dan SpearingClinical Audit and Research, St John New Zealand, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-9056-2263
Graham John HowieParamedicine Department, Auckland University of Technology, Auckland, New Zealand.ORCID http://orcid.org/0000-0001-6907-8074
Auckland University of Technology · NZSt John New Zealand · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the impact of a 5-week national lockdown on ambulance service demand during the COVID-19 pandemic in New Zealand.

designA descriptive cross-sectional, observational study.

settingHigh-quality data from ambulance electronic clinical records, New Zealand.

participantsAmbulance records were obtained from 588 690 attendances during pre-lockdown (prior to 17 February 2020) and from 36 238 records during the lockdown period (23 March to 26 April 2020).

main outcome measuresAmbulance service utilisation during lockdown was compared with pre-lockdown: (a) descriptive analyses of ambulance events and proportions of event types for each period, (b) absolute rates of ambulance attendance (event types/week) for each period.

resultsDuring lockdown, ambulance patients were more likely to be attended at home and less likely to be aged between 16 and 25 years. There was a significant increase in the proportion of lower acuity patients (Status 3 and Status 4) attended (p<0.001) and a corresponding increase in patients not transported from scene (p<0.001). Road traffic crashes (p<0.001) and alcohol-related incidents (p<0.001) significantly decreased. There was a decrease in the absolute number of weekly ambulance attendances (ratio (95% CI), 0.89 (0.87 to 0.91), p<0.001), attendances to respiratory conditions (0.74 (0.61 to 0.86), p=0.01), and trauma (0.81 (0.77 to 0.85), p<0.001). However, there was a significant increase in ambulance attendances for mental health conditions (1.37 (1.22 to 1.51), p=0.005).

conclusionsDespite the relative absence of COVID-19 in the community during the 5-week nationwide lockdown, there were significant differences in ambulance utilisation during this period. The lockdown was associated with an increase in ambulance attendances for mental health conditions and is of concern. In considering future lockdowns, the potential implications on a population's mental well-being will need to be seriously considered against the benefits of elimination of virus transmission.

Indexed as

Emergency Service, HospitalQuarantineSARS-CoV-2AdolescentAdultAgedAmbulancesChildChild, PreschoolCommunicable Disease ControlCOVID-19Cross-Sectional StudiesFemaleHumansInfantInfant, Newbornaccident & emergency medicineCOVID-19health policymental healthprimary carepublic health

Identifiers

PMID33361171
PMCPMC7759754
OpenAlexW3114819230

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.