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Table 1 Reliability and coefficients of variation in hemodynamics for repeated measurements

From: Physiological aspects of the determination of comprehensive arterial inflows in the lower abdomen assessed by Doppler ultrasound

Hemodynamics variable

Target artery

1st

2nd

3rd

Mean CV (%)

Relative reliability, SM-ICC

F(2, 118, 0.05)

p< 0.05

  

Mean

SD

Mean

SD

Mean

SD

    

Blood velocity (cm/sec)

Ao

26.0

6.6

26.2

6.3

26.0

7.0

4.9

0.94

0.18

ns

 

LFA

8.4

2.5

8.3

2.3

8.2

2.5

7.8

0.90

0.48

ns

 

RFA

8.4

2.5

8.2

2.2

8.3

2.6

8.7

0.85

1.15

ns

Vessel diameter (mm)

Ao

15.5

1.3

15.6

1.2

15.5

1.2

1.3

0.95

3.63

ns

 

LFA

9.0

0.7

9.1

0.7

9.0

0.7

1.4

0.94

3.09

ns

 

RFA

9.1

0.8

9.1

0.7

9.0

0.8

1.2

0.97

1.35

ns

Blood flow (ml/min)

Ao

2946

774

2989

740

2931

818

4.9

0.95

1.65

ns

 

LFA

322

104

324

105

317

113

8.6

0.90

0.66

ns

 

RFA

323

103

317

94

319

106

8.6

0.90

0.57

ns

 

Ab

2301

699

2348

666

2295

721

6.2

0.94

1.87

ns

  1. Mean coefficients of variation (CV) in hemodynamics were obtained from the average CV values of 60 participants among three repeated measurements over three different days. Single-measure intra-class correlation coefficient (SM-ICC) was evaluated by three repeated measurements over three different days. All measurements were performed by a single operator. SD, standard deviation; ns, not significant; Ao, abdominal aorta; LFA, left femoral artery; RFA, right femoral artery; Ab, lower abdomen. This material is reproduced and additional data were provided for analysis from Osada et al. [12], with permission from IOP Publishing Ltd.