ToolsCalculators
4C Mortality Score for COVID-19
In-hospital mortality risk in patients admitted with COVID-19.
4C Mortality Score for COVID-19
Age
Sex
Number of comorbidities
Chronic cardiac, respiratory (excl. asthma), renal, mild/moderate/severe liver or neurological disease, connective tissue disease, diabetes, HIV/AIDS, malignancy, dementia, obesity.
Respiratory rate
Peripheral oxygen saturation on room air
Glasgow Coma Scale
Urea (BUN)
C-reactive protein
Result0 points
Low risk group; in-hospital mortality about 1.2 % in the derivation cohort.
- Risk group
- Low
- In-hospital mortality
- 1.2 %
When to use
- Risk-stratifying adults at hospital admission with confirmed or suspected COVID-19.
Formula
Sum of points from age, sex, comorbidity count, respiratory rate, SpO2, GCS, urea and CRP. Range 0-21.
Pearls and pitfalls
- Designed for use at initial hospital assessment, not for community triage.