Table 3 Comparison of predictive variable for 28-day mortality included in the propensity score before and after matching. Values are expressed as mean ± SD or number (%). d corresponds to the standard mean deviation

n = 157

n = 249

n = 97

n = 240

0.01

Age

68 ± 16

70 ± 15

0.24

72 ± 14

67 ± 16

0.92

Hypertension

65 (41%)

101 (41%)

0.93

41 (42%)

100 (42%)

0.16

COPD

25 (16%)

31 (12%)

0.29

16 (16%)

26 (11%)

0.16

Cancer

56 (35%)

88 (35%)

0.99

74 (76%)

40 (17%)

0.07

Diabetes mellitus

39 (25%)

68 (27%)

0.60

22 (23%)

72 (30%)

0.18

Chronic cardiac failure

36 (23%)

33 (13%)

0.01

20 (21%)

34 (14%)

0.15

Chronic renal failure

20 (13%)

33 (13%)

0.94

17 (18%)

26 (11%)

0.09

Immunodepression

43 (27%)

77 (31%)

0.46

29 (30%)

64 (27%)

0.55

Fluid expansion

500 [500–1000]

750 [500–1250]

 < 10^–3

750 [500–1200]

750 [500–1025]

0.71

Catecholamine

25 (16%)

77 (31%)

0.001

29 (30%)

62 (26%)

0.45

Antibiotic therapy

35 (22%)

80 32%)

0.03

25 (26%)

77 (32%)

0.26

Prehospital duration

56 ± 30

70 ± 31

 < 10^–3

60 ± 30

66 ± 32

0.50

Hospital LOS

11 [6-21]

12 [7-20]

0.27

6 [2-12]

15 [9-23]

 < 10^–3