Table 5.

Variable assignment table

Variable	Symbol	Assignment
Prognosis	Y	Good prognosis = 0, Poor prognosis = 1
LVEF	X1	Measured value
LVFS	X2	Measured value
CD3+	X3	Measured value
CD4+	X4	Measured value
CD64	X5	Measured value
Severity	X6	Non-critically ill = 0, Critically ill = 1

Notes: LVEF: left ventricular ejection fraction. LVFS: left ventricular fractional shortening.