Table 1 Patient characteristics of the whole cohort

Clinical information

Male, gender, n (%)

188 (69.1)

Age–median [IQR], years

74 [65–81]

BMI–median [IQR], kg/m²

21.0 [18.4–23.9]

Charlson comorbidity index–median [IQR]

2 [1–3]

Dementia, n (%)

39 (14.3)

Cerebrovascular disease, n (%)

33 (12.1)

ICU admission from

Outpatients, n (%)

19 (7.0)

Emergency department, n (%)

173 (63.6)

General ward, n (%)

65 (23.9)

Transfer from another hospital, n (%)

15 (5.5)

ICU admission type^a

Medical, n (%)

157 (57.9)

Surgery, n (%)

114 (42.1)

Elective operation, n (%)

17 (6.3)

Emergency operation, n (%)

97 (35.8)

ICU admission category^b

Cardiovascular, n (%)

34 (12.6)

Respiratory, n (%)

88 (32.7)

Gastrointestinal, n (%)

56 (21.9)

Trauma, n (%)

11 (4.1)

Other, n (%)

79 (29.3)

Sepsis at ICU admission

Sepsis, n (%)

146 (53.7)

Septic shock, n (%)

136 (50.0)

APACHE II score at ICU admission–median [IQR]

23 [17–29]

SOFA score at ICU admission–median [IQR]

8 [6–10]

Endotracheal intubation duration–median [IQR], days

5.3 [3.3–7.5]

Organ support use

Vasopressor, n (%)

212 (77.9)

ECMO, n (%)

6 (2.2)

IABP, n (%)

13 (4.8)

RRT, n (%)

83 (30.5)

Enteral nutrition, n (%)

219 (80.5)

Enteral nutrition duration–median [IQR], days

10 [5–19]

Parenteral nutrition, n (%)

73 (26.8)

Parenteral nutrition duration–median [IQR], days

8 [4–15]

SOFA score on extubation day–median [IQR]

4 [2–6]

Delirium on extubation day, n (%)

139 (51.1)

Length of ICU stay–median [IQR], days

8 [5–11]

Length of hospital stay–median [IQR], days

44 [27–67]