Table 3. Comparison of patients with 28-day survival and mortality.

Characteristic	Mortality (n = 34, 55.7%)	Survival (n = 27, 44.3%)	p value
Age	73 (64–81)	57 (46–67)	<0.001
Gender			0.791
Male	21 (61.8%)	18 (66.7%)
Female	13 (38.2%)	9 (33.3%)
APACHE II score	26 (21–33)	23 (16–24)	0.008
SOFA score	11 (9–13)	10 (7–13)	0.221
Acute lung injury score	2.88 (2.50–3.25)	3.0 (2.50–3.25)	0.540
Mean arterial pressure	69.2 (61.0–79.7)	71.7 (66.6–86.0)	0.257
BMI	22.7 (19.8–25.0)	24.2 (21.6–27.6)	0.235
VT, ml/kg PBW	7.3 (6.8–7.9)	7.5 (6.7–8.4)	0.532
PaO2/FiO2, mmHg	116.5 (78.4–151.5)	111.8 (73.6–172.3)	0.738
pH	7.374 (7.324–7.435)	7.416 (7.366–7.454)	0.117
NT-proBNP, pg/ml	3956 (771–9838)	1190 (398–3530)	0.026
Number of comorbidities	1 (1–2)	1 (0–2)	0.598
Number of organ dysfunctions	2 (1–3)	1 (1–2)	0.204
Length of ICU stay, days	13 (10–17)	19 (13–35)	<0.001
Length of hospital stay, days	15 (10–20)	35 (28–50)	<0.001