Evidence map›Paper›PMID 35473725›Full record

Observational studyBMJ open2022

Ability of the National Early Warning Score and its respiratory and haemodynamic subcomponents to predict short-term mortality on general wards: a prospective three-centre observational study in Finland.

Eetu Loisa, Antti Kallonen, Sanna Hoppu, Joonas Tirkkonen

Registry-linked trialAbstract readObservational Study
In one paragraph

Observational study in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04055350 (Electronically Recorded National Early Warning Scores, Pain Scores and PONV Scores Among Hospitalized Patients and the Associated Patient Outcomes.), which is not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
–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.

NCT04055350 unknown statusnot on this map

Electronically Recorded National Early Warning Scores, Pain Scores and PONV Scores Among Hospitalized Patients and the Associated Patient Outcomes.

Typeobservational_patient_registrySponsorTampere University HospitalRan2019 to 2022Enrolled30,000ConditionsPrevention of In-hospital Adverse Events
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. 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

4 authors.

Eetu LoisaFaculty of Medicine, Tampere University, Tampere, Finland eetu.loisa@tuni.fi.ORCID 0000-0003-1293-3847
Antti KallonenFaculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Sanna HoppuEmergency Medical Services, Centre for Prehospital Emergency Care, Tampere University Hospital, Tampere, Finland.
Joonas TirkkonenDepartment of Emergency, Anaesthesia and Pain Medicine, Tampere University Hospital, Tampere, Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo validate the ability of the National Early Warning Score (NEWS) to predict short-term mortality on hospital wards, with a special reference to the NEWS's respiratory and haemodynamic subcomponents.

designA large, 1-year, prospective, observational three-centre study. First measured vital sign datasets on general wards were prospectively collected using a mobile solution system during routine patient care. Area under receiver operator characteristic curves were constructed, and comparisons between ROC curves were conducted with Delong's test for two correlated ROC curves.

settingOne university hospital and two regional hospitals in Finland.

participantsAll 19 001 adult patients admitted to 45 general wards in the three hospitals over the 1-year study period. After excluding 102/19 001 patients (0.53%) with data on some vital signs missing, the final cohort consisted of 18 889 patients with full datasets. PRIMARY AND SECONDARY OUTCOME MEASURES: The primary outcome measure was 1-day mortality and secondary outcomes were 2-day and 30-day mortality rates.

resultsPatients' median age was 70 years, 51% were male and 31% had a surgical reason for admission. The 1-day mortality was 0.36% and the 30-day mortality was 3.9%. The NEWS discriminated 1-day non-survivors with excellent accuracy (AUROC 0.91, 95% CI 0.87 to 0.95) and 30-day mortality with acceptable accuracy (0.75, 95% CI 0.73 to 0.77). The NEWS's respiratory rate component discriminated 1-day non-survivors better (0.78, 95% CI 0.72 to 0.84) as compared with the oxygen saturation (0.66, 95% CI 0.59 to 0.73), systolic blood pressure (0.65, 95% CI 0.59 to 0.72) and heart rate (0.67, 95% CI 0.61 to 0.74) subcomponents (p<0.01 in all ROC comparisons). As with the total NEWS, the discriminative performance of the individual score components decreased substantially for the 30-day mortality.

conclusionsNEWS discriminated general ward patients at risk for acute death with excellent statistical accuracy. The respiratory rate component is especially strongly associated with short-term mortality. TRIAL REGISTRATION NUMBER: NCT04055350.

Indexed as

Early Warning ScoreAdultAgedFemaleFinlandHemodynamicsHospital MortalityHumansMalePatients' RoomsProspective StudiesRespiratory Rateadult intensive & critical caregeneral medicine (see internal medicine)protocols & guidelinesquality in health carerisk management

Identifiers

PMID35473725
PMCPMC9045111

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Registered trials

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.