Evaluation of pragmatic oxygenation measurement as a proxy for Covid-19 severity

© 2023. The Author(s)..

Choosing optimal outcome measures maximizes statistical power, accelerates discovery and improves reliability in early-phase trials. We devised and evaluated a modification to a pragmatic measure of oxygenation function, the [Formula: see text] ratio. Because of the ceiling effect in oxyhaemoglobin saturation, [Formula: see text] ratio ceases to reflect pulmonary oxygenation function at high [Formula: see text] values. We found that the correlation of [Formula: see text] with the reference standard ([Formula: see text]/[Formula: see text] ratio) improves substantially when excluding [Formula: see text] and refer to this measure as [Formula: see text]. Using observational data from 39,765 hospitalised COVID-19 patients, we demonstrate that [Formula: see text] is predictive of mortality, and compare the sample sizes required for trials using four different outcome measures. We show that a significant difference in outcome could be detected with the smallest sample size using [Formula: see text]. We demonstrate that [Formula: see text] is an effective intermediate outcome measure in COVID-19. It is a non-invasive measurement, representative of disease severity and provides greater statistical power.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Nature communications - 14(2023), 1 vom: 15. Nov., Seite 7374

Sprache:

Englisch

Beteiligte Personen:

Swets, Maaike C [VerfasserIn]
Kerr, Steven [VerfasserIn]
Scott-Brown, James [VerfasserIn]
Brown, Adam B [VerfasserIn]
Gupta, Rishi [VerfasserIn]
Millar, Jonathan E [VerfasserIn]
Spata, Enti [VerfasserIn]
McCurrach, Fiona [VerfasserIn]
Bretherick, Andrew D [VerfasserIn]
Docherty, Annemarie [VerfasserIn]
Harrison, David [VerfasserIn]
Rowan, Kathy [VerfasserIn]
Young, Neil [VerfasserIn]
ISARIC4C Investigators [VerfasserIn]
Groeneveld, Geert H [VerfasserIn]
Dunning, Jake [VerfasserIn]
Nguyen-Van-Tam, Jonathan S [VerfasserIn]
Openshaw, Peter [VerfasserIn]
Horby, Peter W [VerfasserIn]
Harrison, Ewen [VerfasserIn]
Staplin, Natalie [VerfasserIn]
Semple, Malcolm G [VerfasserIn]
Lone, Nazir [VerfasserIn]
Baillie, J Kenneth [VerfasserIn]

Links:

Volltext

Themen:

Journal Article
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 17.11.2023

Date Revised 10.02.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41467-023-42205-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM364598514