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Table 2 Results of pre and post-standardization analyses

From: Towards standardized postprocessing of global longitudinal strain by feature tracking – OptiStrain CMR-FT study

All subjects

Pre-Standardization

Post-Standardization

Sig. (p-value)

GLS Medis

   

 Mean ± SD

16.9 ± 5.5

17.4 ± 2.7

0.32

 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.3 ± 2.1

0.1 ± 1.1

0.23 ± 0.7

−0.51 ± 1.9

 CV (%)

7.2

11

3.1

5.2

 ICC

0.979

0.914

0.996

0.98

GLS CVI42

 Mean ± SD

19.0 ± 4.5

19.0 ± 3.9

0.98

 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.7 ± 2.3

−0.3 ± 1.3

− 0.2 ± 0.7

− 0.3 ± 1.1

 CV (%)

4.6

4.7

4.3

4.4

 ICC

0.978

0.964

0.995

0.993

Controls

Pre-Standardization

Post-Standardization

Sig. (p-value)

GLS Medis

 Mean ± SD

19.8 ± 5.3

20.71 ± 2.21

0.24

 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.9 ± 3.5

−0.4 ± 2.6

0.5 ± 1.1

0.51 ± 1.1

 CV (%)

3.8

6.5

2.2

2.2

 ICC

0.88

0.85

0.96

0.92

GLS CVI42

 Mean ± SD

24.1 ± 5.2

23.51 ± 2.8

0.58

 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.7 ± 2.4

−0.6 ± 3.5

−0.7 ± 1.1

−1.2 ± 2.4

 CV (%)

3.4

5.8

1.6

2.0

 ICC

0.85

0.79

0.96

0.93

IHD

Pre-Standardization

Post-Standardization

Sig. (p-value)

GLS Medis

 Mean ± SD

16.2 ± 4.4

18.3 ± 2.2

0.45

 Cohen D

0.74

1.09

  
 

IntraOB

InterOB

IntraOB

InterOB

 MD ± SD

−0.4 ± 2.7

0.3 ± 1.9

0.3 ± 0.7

0.3 ± 0.8

 CV (%)

6.8

7.6

2.3

3.2

 ICC

0.79

0.81

0.92

0.89

GLS CVI42

 Mean ± SD

19.4 ± 5.31

20.3 ± 3.9

0.63

 Cohen D

0.89

0.95

  
 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.8 ± 2.8

−0.5 ± 1.8

−0.4 ± 0.7

−0.5 ± 1.2

 CV (%)

3.5

3.6

1.8

2.4

 ICC

0.80

0.78

0.95

0.90

DCM

Pre-Standardization

Post-Standardization

Sig. (p-value)

GLS Medis

 Mean ± SD

16.38 ± 3.42

15.9 ± 2.4

0.599

 Cohen D

0.77

2.09

  
 

IntraOB

InterOB

IntraOB

InterOB

 MD ± SD

−0.2 ± 1.2

−0.9 ± 3.2

0.3 ± 0.7

−0.8 ± 0.6

 CV (%)

6

3.5

2.3

1

 ICC

0.74

0.79

0.93

0.96

GLS CVI42

 Mean ± SD

17.7 ± 5.71

16.8 ± 2.2

0.26

 Cohen D

1.17

2.67

  
 

IntraOB

InterOB

IntraOB

InterOB

  

 MD ± SD

−0.6 ± 2.1

−0.3 ± 1.1

−0.5 ± 0.6

−0.4 ± 0.9

 CV (%)

3.5

3.6

1.3

2.3

 ICC

0.78

0.75

0.95

0.93

  1. IHD Ischaemic heart disease, DCM Dilated cardiomyopathy, GLS Global longitudinal strain, MD Mean differences, SD Standard deviation, paired and unpaired t-test for repeated measurements and the differences between the group, *p < 0.05 is considered significant
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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