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Table 3 Analysis of the respiratory variables according to the results by age

From: Applying a new weaning index in ICU older patients

 

Age ≥70

Age <70

Variable

Success (%)

Failure (%)

RR

95% CI

Success (%)

Failure (%)

RR

95% CI

P/F ≥255

59.2

46.7

1.11

0.94 to 1.30

63.2

16.7

1.30

1.13 to 1.50

Cqst.rs ≥30

80.8

23.3

1.83

1.38 to 2.43

84.2

29.2

1.62

1.25 to 2.10

IWI ≥25.5

97.6

3.3

10.6

3.60 to 31.1

96.1

8.3

4.60

2.26 to 9.36

P 0.1 ≤3.1

78.4

36.7

1.53

1.19 to 1.97

77.0

20.8

1.48

1.21 to 1.81

f ≤29

72.8

33.3

1.43

1.16 to 1.77

68.4

20.8

1.33

1.14 to 1.56

Vt ≥320

76.8

23.3

1.67

1.31 to 2.14

73.7

29.2

1.34

1.13 to 1.60

f/Vt*P 0.1 ≤270

80.0

33.3

1.64

1.25 to 2.14

77.0

16.7

1.52

1.24 to 1.86

f/Vt ≤100

81.6

23.3

1.87

1.40 to 2.51

78.3

25.0

1.47

1.20 to 1.81

  1. RR, relative risk. Significant P < 0.0001, except for P/F on age ≥70.