Skip to main content

Advertisement

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 %)