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Table 1 Baseline demographic and clinical characteristics (N = 787)

From: Comparison between pressure support ventilation and T-piece in spontaneous breathing trials

 

T-piece group (n = 473)

PSV group (n = 314)

p-value

Age, years

67 (57–75)

67 (57–76)

0.726

Male

307 (64.9)

209 (66.56)

0.632

Body mass index, kg/m2

22.2 (19.7–25.3)

22.7 (19.7–25.8)

0.523

Comorbidities

 Chronic obstructive pulmonary disease

33 (7.9)

26 (9.5)

0.448

 Asthma

8 (1.9)

5 (1.3)

0.941

 Interstitial lung disease

9 (2.2)

10 (3.7)

0.233

 Heart failure: NYHA classes III–IV

31 (7.4)

37 (13.6)

0.008

 Chronic renal failure

61 (14.6)

45 (16.5)

0.492

 Liver cirrhosis: Child–Pugh Class C

12 (2.9)

9 (3.3)

0.746

 Solid/hematologic malignancy

263 (62.8)

169 (61.9)

0.819

 Myopathies/Neuropathies

30 (7.2)

36 (13.2)

0.008

 Dementia

142 (30.0)

90 (28.7)

0.682

Major reason for MV

0.069

 Hypoxemic respiratory failure

159 (33.6)

101 (32.2)

 

 Hypercapnic respiratory failure

140 (29.6)

69 (22.0)

 

 Shock

111 (23.5)

89 (28.3)

 

 Surgery

5 (1.1)

6 (1.9)

 

 Othersa

58 (12.3)

49 (15.6)

 
  1. Values are median with interquartile range or number (%)
  2. MV mechanical ventilation, NYHA New York Heart Association, PSV pressure support ventilation
  3. aOthers include airway protection, neurological impairment, and metabolic causes