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Table 3 Between-occasion coefficient of variation for patients receiving measurements on at least two different occasions

From: Increased duration of mechanical ventilation is associated with decreased diaphragmatic force: a prospective observational study

Patient

Mean value Pdi (cm H2O)

Number of measurements

Time span between first and last measurement (hours)

Coefficient of variation (%)

1

12.2

2

24

1.9

4

11.7

2

24

15.5

5

8.7

2

48

6.5

6

15.6

2

48

2.0

7

9.5

2

120

16.6

9

10.0

2

24

16.3

10

20.5

4

72

9.3

Mean

12.6

2,3

51.4

9,7

  1. Pdi, transdiaphragmatic pressure.
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Critical Care

ISSN: 1364-8535