Table 1 Baseline characteristics and clinical risk conditions: ICU and ward

Number

815

108

707

Age, years; median (interquartile range)

74 (55–83)

66 (48–78)

74 (56–84)

<0.001

Female sex, n (percentage)

450 (55.2)

61 (56.5)

389 (55.0)

0.836

McCabe score

Non-fatal

618 (75.8)

81 (75.0)

537 (76.0)

Ultimately fatal

178 (21.8)

25 (23.1)

153 (21.6)

0.894

Fatal

19 (2.3)

2 (1.9)

17 (2.4)

Medical (versus surgical) admission

663 (81.3)

56 (51.9)

607 (85.9)

<0.001

Clinical risk conditions, n (percentage)

Sepsis

704 (86.4)

84 (77.8)

620 (87.7)

0.005

Pneumonia

233 (28.6)

30 (27.8)

203 (28.7)

0.841

Aspiration

16 (2.0)

1 (0.9)

15 (2.1)

0.709

Trauma

21 (2.6)

3 (2.8)

18 (2.5)

0.751

Transfusions

9 (1.1)

8 (7.4)

1 (0.1)

<0.001

Pancreatitis

75 (9.2)

3 (2.8)

72 (10.2)

0.011

Pulmonary contusion

3 (0.4)

2 (1.9)

1 (0.1)

0.048

Shock

59 (7.2)

51 (47.2)

8 (1.1)

<0.001

Other

2 (0.2)

2 (1.9)

0

0.017

Any pulmonary insult

244 (29.9)

34 (31.5)

210 (29.7)

0.707

On day of clinical risk development, median (IQR) or n (percentage)

SAPS II

26 (18–33)

40 (27–49)

28 (22–35)

<0.001

MAP

84 (74.8–95)

70 (56–83)

89 (77.8–100)

<0.001

GCS

15 (15–15)

15 (15–15)

15 (15–15)

0.647

PaO₂/FiO₂, mmHg

261.9 (221–310)

217.1 (158–323)

266.7 (238–314)

<0.001

   Vasoactive drugs

40 (4.9)

40 (37.0)

0

<0.001

Mechanical ventilation

46 (5.6)

46 (42.6)

0

<0.001

Location (on ward)

730 (89.6)

23 (21.5)

707 (100)

<0.001

   MODS score

1.0 (0–3)

5 (3–7)

2 (1–3)

<0.001

Days from hospital admission to insult

0 (0–1)

0 (0–5)

0 (0–0)

0.041

ALI diagnosis

20 (2.5)

9 (8.3)

11 (1.6)

<0.001

ARDS diagnosis

33 (4.0)

29 (26.8)

4 (0.6)

<0.001