Age (years)
|
Mean (SD)
|
66 (13)
|
66 (12)
|
0.877
|
67 (14)
|
69 (13)
|
0.360
|
Median (IQR)
|
68 (56.5–76)
|
67 (59.5–74.25)
|
0.842
|
68.5 (60.25–78.75)
|
71 (61–79.25)
|
0.501
|
Men, n (%)
|
48 (64.0%)
|
72 (78.3%)
|
0.041
|
80 (65.6%)
|
57 (52.8%)
|
0.048
|
Weight (kg)
|
Mean (SD)
|
69.6 (16.4)
|
72 (17.1)
|
0.351
|
75.4 (15.5)
|
72.1 (16.5)
|
0.120
|
Median (IQR)
|
66 (59.5–74.5)
|
70.5 (60–80.8)
|
0.208
|
76 (65–81.8)
|
70 (60–80)
|
0.047
|
SAPS III
|
Mean (SD)
|
69.6 (10)
|
68.9 (9.4)
|
0.666
|
74.4 (11.5)
|
74 (12)
|
0.797
|
Median (IQR)
|
68 (63.8–75.2)
|
70 (62.5–75)
|
0.921
|
73 (66.2–80.8)
|
71 (67–82)
|
0.614
|
SOFA
|
Mean (SD)
|
9.5 (2.5)
|
9.6 (2.4)
|
0.851
|
10.6 (2.9)
|
10.6 (2.8)
|
0.987
|
Median (IQR)
|
9 (8–11)
|
9 (8–11)
|
0.782
|
11 (8–12)
|
11 (8–12)
|
0.850
|
Mc Cabe Score
|
1
|
45 (60.0%)
|
62 (67.4%)
|
0.308
|
79 (64.8%)
|
70 (64.8%)
|
0.927
|
2
|
24 (32.0%)
|
20 (21.7%)
|
30 (24.6%)
|
28 (25.9%)
|
3
|
6 (8.0%)
|
10 (10.9%)
|
13 (10.7%)
|
10 (9.3%)
|
Recent surgical history, n (%)
|
No
|
57 (76.0%)
|
75 (81.5%)
|
0.422
|
82 (67.2%)
|
67 (62.0%)
|
0.661
|
Elective
|
7 (9.3%)
|
4 (4.3%)
|
5(4.1%)
|
4 (3.7%)
|
Emergency
|
11 (14.7%)
|
13 (14.1%)
|
35 (28.7%)
|
37 (34.3%)
|
Preexisting disorders, n (%)
|
Immunosuppression
|
14 (18.7%)
|
14 (15.2%)
|
0.553
|
28 (23.0%)
|
20 (18.5%)
|
0.409
|
Cancer
|
26 (34.7%)
|
24 (26.1%)
|
0.228
|
36 (29.8%)
|
35 (32.4%)
|
0.664
|
Heart failure
|
5 (9.3%)
|
7 (7.6%)
|
0.815
|
8 (6.6%)
|
4 (3.7%)
|
0.491
|
Chronic kidney failure
|
6 (8.0%)
|
7 (7.6%)
|
0.925
|
15 (12.4%)
|
12 (11.1%)
|
0.763
|
COPD
|
19 (25.3%)
|
17 (18.5%)
|
0.284
|
11 (9.1%)
|
16 (14.8%)
|
0.180
|
Coronary artery disease
|
10 (13.3%)
|
15 (16.3%)
|
0.592
|
12 (10.0%)
|
9 (8.3%)
|
0.678
|
Cirrhosis
|
0 (0%)
|
2 (2.2%)
|
0.502F
|
11 (9.1%)
|
5 (4.6%)
|
0.186
|
Source of infection, n (%)
|
Lung
|
44 (58.7%)
|
57 (62.0%)
|
0.866
|
39 (26.2%)
|
37 (34.3%)
|
0.739
|
Abdomen
|
10 (13.3%)
|
15 (16.3%)
|
39 (32.0%)
|
35 (32.4%)
|
Urinary tract
|
6 (8.0%)
|
6 (6.5%)
|
8 (6.6%)
|
10 (9.3%)
|
Other community acquired infection
|
15 (20.0%)
|
14 (15.2%)
|
36 (29.5%)
|
26 (24.1%)
|
Mean arterial pressure (mmHg)
|
Mean (SD)
|
75 (12)
|
75 (12)
|
0.949
|
72 (16)
|
72 (16)
|
0.872
|
Median (IQR)
|
74 (67–80)
|
73.5 (67–81)
|
0.810
|
71 (64–83)
|
70 (61.5–81)
|
0.761
|
Heart rate (beats per min)
|
Mean (SD)
|
96 (24)
|
99 (25)
|
0.411
|
108 (25)
|
107 (22)
|
0.669
|
Median (IQR)
|
94 (82–109)
|
96 (82–110.5)
|
0.578
|
110 (91–124)
|
105 (93–123)
|
0.688
|
Arterial pH
|
Mean (SD)
|
7.33 (0.11)
|
7.32 (0.09)
|
0.766
|
7.25 (0.12)
|
7.26 (0.11)
|
0.222
|
Median (IQR)
|
7.33 (7.26–7.40)
|
7.32 (7.26–7.37)
|
0.716
|
7.27 (7.18–7.32)
|
7.28 (7.20–7.33)
|
0.177
|
Lactate (mmol/L)
|
Mean (SD)
|
1.4 (0.4)
|
1.4 (0.4)
|
0.774
|
5.2 (3.6)
|
4.8 (3.8)
|
0.467
|
Median (IQR)
|
1.4 (1.0–1.7)
|
1.5 (1.0–1.7)
|
0.736
|
3.7 (2.8–6.5)
|
3.4 (2.7–5.2)
|
0.231
|
Crystalloid fluid treatment before inclusion (mL)
|
Mean (SD)
|
2883 (1397)
|
2631 (1298)
|
0.234
|
2876 (1392)
|
3003 (1522)
|
0.511
|
Median (IQR)
|
2500 (2000–3500)
|
2250 (2000–3000)
|
0.147
|
2500 (2000–3500)
|
2500 (2000–3625)
|
0.684
|
Serum sodium (mmol/L)
|
Mean (SD)
|
138 (5)
|
138 (3)
|
0.652
|
139 (6)
|
139 (4)
|
0.611
|
Median (IQR)
|
138 (134–142)
|
139 (136–141)
|
0.431
|
139 (136–142)
|
139 (136–142)
|
0.545
|
Serum chloride (mmol/L)
|
Mean (SD)
|
107 (6)
|
106 (6)
|
0.471
|
106 (7)
|
106 (6)
|
0.645
|
Median (IQR)
|
106 (103–111)
|
105.5 (103–109)
|
0.448
|
105 (102–109)
|
105 (102–111)
|
0.355
|
Dose of norepinephrine (µg/kg/min)
|
Mean (SD)
|
0.44 (0.38)
|
0.56 (0.65)
|
0.137
|
0.79 (0.82)
|
0.75 (0.74)
|
0.701
|
Median (IQR)
|
0.31 (0.2–0.5)
|
0.35 (0.2–0.65)
|
0.367
|
0.55 (0.27–1.04)
|
0.50 (0.30–0.88)
|
0.930
|
PaO2/FiO2 ratio (mmHg)
|
Mean (SD)
|
227 (102)
|
191 (73)
|
0.012
|
231 (108)
|
232 (110)
|
0.934
|
Median (IQR)
|
207 (143–265)
|
175 (131–235)
|
0.023
|
198 (143–301)
|
202 (149–293)
|
0.876
|
Patients with PaO2 > 120 mmHg, n (%)
|
37 (49.3%)
|
37 (40.2%)
|
0.238
|
72 (59.0%)
|
61 (56.5%)
|
0.698
|
ARDS with PaO2/FiO2 ratio < 200 mmHg, n (%)
|
36 (48.0%)
|
56 (64.1%)
|
0.096
|
61 (50.0%)
|
52 (48.1%)
|
0.779
|