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Table 2 Interpretability of items, views, and image quality by the two experts

From: Does physician experience influence the interpretability of focused echocardiography images performed by a pocket device?

 

Expert 1

Expert 2

Cohen kappa

N = 85

N = 85

Interpretable Goals

   

Qualitative left ventricular function

  

.4

Interpretable

62 (73 %)

56 (66 %)

 

Normally

37 (60 %)

39 (69 %)

Moderate*

16 (26 %)

15 (27 %)

Severe**

9 (14 %)

2 (4 %)

Pericardial effusion

  

.56

Interpretable

62 (73 %)

47 (55 %)

 

No

56 (90 %)

41 (87 %)

Yes

6 (10 %)

6 (13 %)

Right ventricular dilation

  

.48

Interpretable

55 (65 %)

49 (58 %)

 

No

45 (82 %)

45 (92 %)

Moderate

8 (14 %)

2 (4 %)

Severe

2 (4 %)

2 (4 %)

Inferior vena cava compliance

  

.46

Interpretable

39 (46 %)

34 (41 %)

 

0 %

8 (21 %)

9 (26 %)

1 – 39 %

15 (38 %)

11 (31 %)

40 – 99 %

11 (28 %)

5 (14 %)

100 %

5 (13 %)

10 (29 %)

Image Quality

   

Parasternal short axis

   

Interpretable

26 (31 %)

22 (26 %)

.83

Mean scale

2 ± 1

1.9 ± 0.9

.81

Parasternal long axis

   

Interpretable

41 (48 %)

36 (42 %)

.6

Mean scale

2.3 ± 1

2.2 ± 1

.54

Apical four chambers

   

Interpretable

47 (55 %)

52 (61 %)

.64

Mean scale

2.6 ± 1

2.5 ± 0.9

.51

Subcostal four chambers

   

Interpretable

34 (40 %)

33 (39 %)

.69

Mean scale

2.6 ± 1.3

2.1 ± 1.1

.62

Inferior vena cava view

   

Interpretable

41 (48 %)

36 (42 %)

.6

Mean scale

2.5 ± 1.3

2.2 ± 1

.47

  1. Quality scale: 1 = no image, 2 = poor and unusable image quality, 3 = usable image quality, 4 = good image quality, and 5 = perfect image quality. Interpretable = 3 or more. *Moderate alteration (50 – 30 %), **Severe alteration (<30 %)