Echocardiographic parameters in COVID-19 patients and their association with ICU mortality: a prospective multicenter observational study

The Ultrasound Journal

Table 2 Primary and secondary outcomes

	N	All	Survivors	Non-survivors	p value
Primary outcome
ICU mortality	573	573	233 (40%)	340 (60%)
Secondary outcomes
Length of ICU stay^§	573	7 (4–13)	6 (4–11)	8 (4–14)	0.138
Duration of mechanical ventilation^§	349	7 (3–12)	7 (5–10)	6 (3–12)	0.305

Values are n (%), p value from Mann–Whitney U test. ^§ Median (interquartile range)