Table 2 Agreement, over- and underestimation of students with tutor in the assessment of the left ventricle
Global Echocardiography Image Quality | Complete Representation of Left Ventricle | Representation of the Cardiac Apex in the Top of the Ultrasound Sector | Segmental Analysis of Left Ventricular Walls | Ejection Fraction of Left Ventricle | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
“Eye-Balling” | Calculated [ordinally scaled] | |||||||||||||||||
Examination | Agreement, Over- and Underestimation of Students with Professional [%] | |||||||||||||||||
1 | 64.0 | 36.0 | 0.0 | 72.0 | 24.0 | 4.0 | 88.0 | 8.0 | 4.0 | 94.0 | 2.0 | 4.0 | 88.0 | 8.0 | 4.0 | 60.0 | 40.0 | 0.0 |
2 | 68.0 | 32.0 | 0.0 | 80.0 | 20.0 | 0.0 | 76.0 | 24.0 | 0.0 | 95.3 | 0.7 | 4.0 | 80.0 | 16.0 | 4.0 | 60.0 | 32.0 | 8.0 |
3 | 84.0 | 16.0 | 0.0 | 96.0 | 4.0 | 0.0 | 92.0 | 8.0 | 0.0 | 97.3 | 1.3 | 1.3 | 84.0 | 8.0 | 8.0 | 52.0 | 24.0 | 24.0 |
4 | 76.0 | 24.0 | 0.0 | 92.0 | 8.0 | 0.0 | 96.0 | 4.0 | 0.0 | 93.3 | 6.0 | 0.7 | 84.0 | 12.0 | 4.0 | 52.0 | 36.0 | 12.0 |
5 | 72.0 | 28.0 | 0.0 | 92.0 | 8.0 | 0.0 | 92.0 | 8.0 | 0.0 | 92.7 | 2.7 | 4.7 | 76.0 | 16.0 | 8.0 | 56.0 | 24.0 | 20.0 |
6 | 76.0 | 24.0 | 0.0 | 100.0 | 0.0 | 0.0 | 88.0 | 12.0 | 0.0 | 92.0 | 4.0 | 4.0 | 64.0 | 16.0 | 20.0 | 56.0 | 24.0 | 20.0 |
7 | 80.0 | 16.0 | 4.0 | 80.0 | 20.0 | 0.0 | 88.0 | 12.0 | 0.0 | 90.0 | 5.3 | 4.7 | 76.0 | 4.0 | 20.0 | 60.0 | 20.0 | 20.0 |
8 | 76.0 | 24.0 | 0.0 | 96.0 | 4.0 | 0.0 | 100.0 | 0.0 | 0.0 | 99.3 | 0.7 | 0.0 | 80.0 | 16.0 | 4.0 | 84.0 | 8.0 | 8.0 |
9 | 95.8 | 4.2 | 0.0 | 95.8 | 4.2 | 0.0 | 95.8 | 4.2 | 0.0 | 93.7 | 0.7 | 5.6 | 91.7 | 0.0 | 8.3 | 70.8 | 25.0 | 4.2 |
10 | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 96.4 | 0.0 | 3.6 | 95.7 | 0.0 | 4.3 | 91.3 | 4.3 | 4.3 |
Bias | + 20.0% | + 8.8% | + 7.6% | −0.009% | + 1.1% | + 11.7% | ||||||||||||
Spearman r | 0.75 | 0.61 | 0.64 | −0.006 | 0.16 | 0.62 | ||||||||||||
p value | 0.002 | 0.067 | 0.054 | 1.0 | 0.657 | 0.06 | ||||||||||||