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 3 Physiological and laboratory parameters of all patients stratified by hospital outcome

	All patients, n = 140	Alive, n = 121	Died, n = 19	P value
At hospital admission
Respiratory rate (breath/minute)	28.8 ± 9.8	29.4 ± 10.2	25.4 ± 6.1	0.10
Peripheral oxygen saturation on room air (%)	92.6 ± 7.3	92.2 ± 7.7	94.8 ± 2.7	0.14
Glasgow coma scale score	14.7 ± 1.1	14.7 ± 1.2	14.6 ± 0.8	0.55
Urea (mmol/L)	6.8 ± 5.0	6.4 ± 4.5	8.9 ± 7.4	0.048
C reactive protein (mg/L) [IQR]	75 [41-121]	74 [40-125]	89 [42-107]	0.81
At ICU admission
Respiratory rate (breath/minute)	28.1 ± 9.5	28.2 ± 9.5	26.9 ± 9.3	0.56
Peripheral oxygen saturation on room air (%)	93.4 ± 3.9	93.5 ± 4.1	93.2 ± 2.8	0.75
Glasgow coma scale score	12.9 ± 4.3	12.9 ± 4.4	13.3 ± 3.8	0.72
Urea (mmol/L)	7.2 ± 4.4	6.8 ± 4.1	9.6 ± 5.4	0.01
C reactive protein (mg/L) [IQR]	75 [33-125]	64 [31-124]	100 [71-134]	0.09

mean ± SD. ICU: Intensive care unit.