Annals of Intensive Care

Table 3 Main outcome measures

From: Mortality, incidence, and microbiological documentation of ventilated acquired pneumonia (VAP) in critically ill patients with COVID-19 or influenza

	All			Influenza			COVID-19
	No VAP	VAP	p-value	No VAP	VAP	p-value	No VAP	VAP	p-value
Number of patients	353	232		59	23		294	209
Duration of IMV	9 [5; 14]	20.5 [14; 33]	< 0.01	8 [4; 17]	22 [14; 40]	< 0.01	9 [5; 14]	20 [14; 33]	< 0.01
Duration of RRT	7 [3; 14]	15 [7; 25]	< 0.01	9 [4; 14]	9 [9; 84]	0.35	6 [3; 13]	15 [6; 25]	< 0.01
Duration of ECMO	6 [3; 13]	15 [8; 25]	< 0.01	3.5 [2; 11.5]	1 [1; 1]	0.51	7 [3; 13]	15 [8; 25]	0.01
Ventilatory-free days at day 28	0 [0; 0]	0 [0; 0]	1.00	0 [0; 0]	0 [0; 0]	1.00	0 [0; 0]	0 [0; 0]	1.00
RRT-free days at day 28	0 [0; 28]	28 [0; 28]	0.50	28 [0; 28]	28 [28; 28]	0.05	0 [0; 28]	0 [0; 28]	0.82
ECMO-free days at day 28	28 [0; 28]	28 [0; 28]	0.49	28 [28; 28]	28 [28; 28]	0.53	28 [0; 28]	28 [0; 28]	0.32
ICU LOS	13 [8; 19]	25 [16; 38]	< 0.01	13 [7; 20]	27 [19; 45]	< 0.01	13 [8; 19]	25 [16; 38]	< 0.01
Hospital LOS	18 [11; 31]	34 [19; 51.5]	< 0.01	21 [13; 41]	46 [35; 57]	< 0.01	17 [11; 30]	31 [19; 50]	< 0.01
Day-60 mortality	149 (42.2)	103 (44.4)	0.60	15 (25.4)	4 (17.4)	0.44	134 (45.6)	99 (47.4)	0.69

VAP ventilator-associated pneumonia, IMV Invasive mechanical ventilation, RRT renal replacement Therapy, ECMO extra-corporeal membrane oxygenation, ICU intensive care unit, LOS length of stay

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