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Table 2 Severity, ventilation, and outcome-related characteristics in weaning groups

From: Diaphragm thickening fraction to predict weaning—a prospective exploratory study

Variables

All weaning (N = 64)

Simple weaning

(n = 33)

Complicated weaning (n = 31)

p value

Severity scores at admission

    

 APACHE-II

12 (10–16)

12 (10–15)

14 (10–16)

0.47

 SOFA

8 (6–10)

8 (6–10)

8 (6–10)

0.74

No of organ failure at admission, n (%)

   

0.04

 1

3 (4.7)

0

3 (9.7)

 

 2

29 (45.3)

18 (54.5)

11 (35.5)

 

 3

23 (35.9)

13 (39.4)

10 (32.2)

 

 4

9 (14.1)

2 (6.1)

7 (22.6)

 

Indication for intubation, n (%)

   

0.44

 Central nervous system

20 (31.3)

9 (27.3)

11 (35.5)

 

 Respiratory

35 (54.7)

20 (60.6)

15 (48.4)

 

 Combination

2 (3.1)

0

2 (6.4)

 

 Others

7 (10.9)

4 (12.1)

3 (9.7)

 

Onset of illness requiring ICU admission, days

7 (5–11.7)

7 (5–12)

7 (6–10)

0.79

Tracheostomy, n (%)

24 (37.5)

1 (3.0)

23 (74.2)

< 0.001

1st T-piece failure, n (%)

20 (31.3)

0

20 (64.5)

< 0.001

Time to T-piece, days

8 (5–14)

6 (4–8.5)

13 (8–22)

< 0.001

MLV, days

12.5 (6–21.7)

6 (5–9)

22 (14–28)

< 0.001

LOS-ICU, days

14.5 (8–28)

8 (7–14.5)

28 (15–35)

< 0.001

Survival at 28 days, n (%)

60 (93.8)

33 (100)

27 (87.1)

0.05

Final outcome, n (%)

   

0.07

 Death

4 (6.3)

0

4 (12.9)

 

 Discharged to home

39 (60.9)

20 (60.6)

19 (61.3)

 

 Transferred to ward

21 (32.8)

13 (39.4)

8 (25.8)

 
  1. Data is expressed in median (interquartile range), unless specified. Test for statistical significance (p value) used is Pearson chi-square for categorical data and Mann-Whitney U test for continuous measurements
  2. Abbreviations: APACHE Acute Physiological and Chronic Health Evaluation, SOFA Sequential Organ Failure Assessment, ICU intensive care unit, MLV mechanical lung ventilation, LOS length of stay