Table 1.

Main patients' characteristics.

	Global (n = 32)	Alive (n = 15)	Dead (n = 17)	p Value
Male sex (n°, %)	25 (78)	9 (36)	16 (64)
Age (years)	63.9 ± 7.4	61.4 ± 7.0	66.1 ± 7.2	0.077
BMI (kg/m2)	27.2 ± 5.6	27.7 ± 6.7	26.9 ± 4.6	0.705
SAPS II (points)	32 ± 10	31 ± 10	33 ± 11	0.552
SOFA (points)	6.3 ± 2.4	6.2 ± 2.5	6.4 ± 2.5	0.872
Onset to hospital (days)	10.3 ± 7	9.9 ± 8	10.7 ± 6.1	0.762
NIV duration (days)	2.2 ± 2.5	2.4 ± 3.1	1.9 ± 1.8	0.609
Onset to ETI (days)	12.5 ± 6	11.9 ± 9.1	11 ± 7.2	0.832
PEEP (cmH2O)	9.8 ± 1.4	9.8 ± 1.9	9.8 ± 0.8	0.975
FiO2	0.75 ± 0.2	0.74 ± 0.2	0.75 ± 0.2	0.805
ETCO2/PaCO2	0.72 ± 0.11	0.75 ± 0.07	0.70 ± 0.12	0.174
PaO2/FiO2 (mmHg)	117.6 ± 39.9	127.7 ± 51.4	107.5 ± 26.1	0.458
C reactive protein (mg/L)	116 ± 88	113 ± 95	119 ± 85	0.842
Fluid balance (ml/day)	1111 ± 598	847 ± 531	1344 ± 567	0.0164
Urinary protein output (g/day)	88.3 ± 38.7	73.7 ± 37.6	101.1 ± 35.9	0.0441