Growth differentiation factor-15 and prognosis in acute respiratory distress syndrome: a retrospective cohort study

Table 3 Ventilator-free, ICU-free, and specific organ system failure-free days by GDF-15 quartile.

	Quartile 1	Quartile 2	Quartile 3	Quartile 4	P value
Ventilator-free days	22 [17, 24]	19 [2, 23]	12 0[23]	2 0[20]	<0.001
ICU-free days	20 [13, 23]	17 [6, 21]	10 0[20]	0 0[19]	<0.001
Cardiovascular	26 [21, 28]	24 [18, 27]	24 [14, 26]	19 [1, 26]	<0.001
Central nervous system	28 [21, 28]	21 [21, 28]	21 0[28]	8 0[21]	<0.001
Coagulation	28 [28, 28]	28 [24, 28]	28 [14, 28]	20 [1, 28]	<0.001
Renal	28 [28, 28]	28 [27, 28]	28 [2, 27]	14 [2, 27]	<0.001
Hepatic	28 [28, 28]	28 [25, 28]	28 [18, 28]	15 [2, 28]	<0.001

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