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Table 7 Assessment of inter- and intra-observer measurement error and repeatability according to the British Standards Institution guidelines and coefficients of variation

From: Assessment of atrial regional and global electromechanical function by tissue velocity echocardiography: a feasibility study on healthy individuals

 

Inter-observer

Intra-observer

Variable

BSI

CV (%)

BSI

CV (%)

P-Aa' start, ms

37

24

28

19

P-Aa' peak, ms

51

16

47

14

Aa' duration, ms

32

8.8

25

7.5

TEMA, ms

53

9.7

45

8.2

Aa' peak velocity, cm/s

2.14

10.1

1.78

8.7

Aa' displacement, mm

1.81

12.3

1.77

11.8

Aa' SR

-0.79

9.4

-0.71

7.8

Aa' S, %

5.4

9.6

4.5

9.1

LA maximal volume, mL

22

18.4

18

14.7

  1. Abbreviations: BSI, British Standards Institution; CV, coefficient of variation; otherwise as in Table 3.
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Cardiovascular Ultrasound

ISSN: 1476-7120

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