Table 2 Subset of feature descriptions across patient-ICU-days from the train, validate, test, and external datasets.

From: Developing and validating machine learning models to predict next-day extubation

 

Train

Validation

Test

External

Number of days

2264

594

831

2835

ECMO flag, n (%)

89 (3.9)

34 (5.7)

32 (3.9)

168 (5.9)

CRRT flag, n (%)

278 (12.3)

58 (9.8)

131 (15.8)

226 (8.0)

PEEP, median [Q1,Q3]

8.0 [5.0,12.0]

7.5 [5.0,12.0]

5.0 [5.0,10.0]

8.0 [5.0,10.0]

FiO2, median [Q1,Q3]

40.0 [30.0,50.0]

40.0 [34.7,55.0]

40.0 [30.0,55.0]

45.0 [35.0,64.0]

Plateau pressure, median [Q1,Q3]

23.0 [18.0,28.0]

26.0 [20.0,31.0]

23.0 [18.0,29.0]

23.0 [19.0,29.0]

  1. Continuous variables are presented as median [Q1,Q3]. Categorical variables are presented as number (percentages). Full features are in Supplemental Table 2.