WHO Ordinal Scale and Inflammation Risk Categories in COVID-19. Comparative Study of the Severity Scales.
J Gen Intern Med
; 37(8): 1980-1987, 2022 06.
Article
in English
| MEDLINE | ID: covidwho-1782931
ABSTRACT
BACKGROUND:
The WHO ordinal severity scale has been used to predict mortality and guide trials in COVID-19. However, it has its limitations.OBJECTIVE:
The present study aims to compare three classificatory and predictive models the WHO ordinal severity scale, the model based on inflammation grades, and the hybrid model.DESIGN:
Retrospective cohort study with patient data collected and followed up from March 1, 2020, to May 1, 2021, from the nationwide SEMI-COVID-19 Registry. The primary study outcome was in-hospital mortality. As this was a hospital-based study, the patients included corresponded to categories 3 to 7 of the WHO ordinal scale. Categories 6 and 7 were grouped in the same category. KEYRESULTS:
A total of 17,225 patients were included in the study. Patients classified as high risk in each of the WHO categories according to the degree of inflammation were as follows 63.8% vs. 79.9% vs. 90.2% vs. 95.1% (p<0.001). In-hospital mortality for WHO ordinal scale categories 3 to 6/7 was as follows 0.8% vs. 24.3% vs. 45.3% vs. 34% (p<0.001). In-hospital mortality for the combined categories of ordinal scale 3a to 5b was as follows 0.4% vs. 1.1% vs. 11.2% vs. 27.5% vs. 35.5% vs. 41.1% (p<0.001). The predictive regression model for in-hospital mortality with our proposed combined ordinal scale reached an AUC=0.871, superior to the two models separately.CONCLUSIONS:
The present study proposes a new severity grading scale for COVID-19 hospitalized patients. In our opinion, it is the most informative, representative, and predictive scale in COVID-19 patients to date.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
Type of study:
Cohort study
/
Diagnostic study
/
Observational study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
J Gen Intern Med
Journal subject:
Internal Medicine
Year:
2022
Document Type:
Article
Affiliation country:
S11606-022-07511-7
Similar
MEDLINE
...
LILACS
LIS