Evidence map›Paper›PMID 33937729›Full record

ArticleEClinicalMedicine2021

The ROX index has greater predictive validity than NEWS2 for deterioration in Covid-19.

Emma Prower, David Grant, Alessandra Bisquera, Cormac P Breen, Luigi Camporota, Maja Gavrilovski, Megan Pontin, Abdel Douiri, Guy W Glover

Abstract read
In one paragraph

Article in EClinicalMedicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 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.

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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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  9. [ROX index to predict failure with low flow devices in COVID-19].Revista medica del Instituto Mexicano del Seguro Social · 2023
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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.

Emma ProwerDepartment of Critical Care, Kings College Hospital, Denmark Hill, London SE5 9RS, UK.
David GrantDepartment of clinical informatics for health informatics, Guys and St Thomas NHS Foundation Trust, Westminster Bridge Road, London SE1 7EH, UK.
Alessandra BisqueraDepartment of Primary Care and Public Health Sciences, Kings College London, Guy's Campus, Addison House, London SE1 1UL, UK.
Cormac P BreenDepartment of Nephrology, Guys and St Thomas NHS Foundation Trust, Westminster Bridge Road, London SE1 7EH, UK.
Luigi CamporotaDepartment of Critical Care, Guys and St Thomas NHS Foundation Trust, Westminster Bridge Road, London SE1 7EH, UK.
Maja GavrilovskiDepartment of Emergency Medicine, Guys and St Thomas NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, UK.
Megan PontinDepartment of Quality and Assurance, Guy's and St Thomas NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, UK.
Abdel DouiriDepartment of Primary Care and Public Health Sciences, Kings College London, Guy's Campus, Addison House, London, SE1 1UL, UK.
Guy W GloverDepartment of Critical Care, Guys and St Thomas NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients admitted to hospital with Covid-19 are at risk of deterioration. The National Early Warning Score (NEWS2) is widely recommended, however it's validity in Covid-19 is not established and indices more specific for respiratory failure may be more appropriate. We aim to describe the physiological antecedents to deterioration, test the predictive validity of NEWS2 and compare this to the ROX index ([SpO

methodA single centre retrospective cohort study of adult patients who were admitted to a medical ward, between 1/3/20 and 30/5/20, with positive results for SARS-CoV-2 RNA. Physiological observations and the NEWS2 were extracted and analysed. The primary outcome was a composite of cardiac arrest, unplanned critical care admission or death within 24 hours. A generalized linear model was used to assess the association of physiological values, NEWS2 and ROX with the outcome.

findingsThe primary outcome occurred in 186 patients (26%). In the preceding 24 hours, deterioration was most marked in respiratory parameters, specifically in escalating oxygen requirement; tachypnoea was a late sign, whilst cardiovascular observations remained stable. The area under the receiver operating curve was 0.815 (95% CI 0.804-0.826) for NEWS2 and 0.848 (95% CI 0.837-0.858) for ROX. Applying the optimal level of ROX, the majority of patients triggered four hours earlier than with NEWS2 of 5.

interpretationNEWS2 may under-perform in Covid-19 due to intrinsic limitations of the design and the unique pathophysiology of the disease. A simple index utilising respiratory parameters can outperform NEWS2 in predicting the occurrence of adverse events.

Indexed as

CoronavirusCovid-19NEWS2Predicting deteriorationRapid response systemsROX

Identifiers

PMID33937729
PMCPMC8068777

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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.