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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