Predictive accuracy of 4C Mortality Score and Acute Physiology and Chronic Health Evaluation scores for mortality in COVID-19 patients admitted to intensive care unit

Table 7 Comparison of mortality rates across intensive care unit 4C score risk groups, n (%)

Risk groups	Total, n = 140	Alive, n = 121	Died, n = 19
Low (0-3)	15	15	0
Intermediate (4-8)	59	58	1 (1.7)
High (9-15)	57	41	16 (28.1)
Very high (16-21)	9	7	2 (22.2)