Table 1

Results of the Bland-Altman analyses at different time points

AI

AS

GP1

GP2

GP3

GP4

GP5

Raw data

Upper LoA (l/min)

1.46

2.2

1.27

1.28

1.74

2.63

1.6

Bias (l/min)

0.18

0.6

-0.02

0.07

0.74

1.73

-0.1

Lower LoA (l/min)

-1.11

-1.0

-1.32

-1.15

-0.21

0.83

-1.7

Percentage data

Upper LoA (%)

36.1

44.6

28.8

31.5

34.0

48.0

38.3

Bias (%)

5

12.2

0.3

2.2

15.4

30.8

0.5

Lower LoA (%)

-26.1

-20.2

28.3

26.9

-3.2

13.5

-37.3

AI = after induction; AS = after sternotomy; GP 1 to 5 = graft preparation time points 1 to 5; LoA = limits of agreement (1.96 standard deviations).

Eleftheriadis et al. Critical Care 2009 13:R179   doi:10.1186/cc8161