|
Correlation analysis and limits of agreement (Bland-Altman analysis) between the echocardiographic methods based upon the experience of the readers. |
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| Expert (n = 5) |
Novice (n = 2) |
Expert (n = 1) |
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| Limits of agreement |
r |
Limits of agreement |
r |
Limits of agreement |
r |
|
|
|
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| LVEF (%): |
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|
|
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| cAutoEF vs BS expert |
1.4 ± 9.0 |
0.89 |
0.8 ± 10.5 |
0.85 |
||
| AutoEF vs BS expert |
2.2 ± 12.1 |
0.81 |
||||
| BS novice vs BS expert |
-3.2 ± 11.4 |
0.81 |
||||
| cAutoEF novice vs expert |
-0.6 ± 5.5 |
0.96 |
||||
|
|
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| EDV/BSA (mL/cm2): |
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|
|
||||||
| cAutoEF vs BS expert |
-3.3 ± 13.0 |
0.94 |
-2.3 ± 13.1 |
0.94 |
||
| AutoEF vs BS expert |
-5.8 ± 14.4 |
0.86 |
||||
| BS novice vs BS expert |
18.8 ± 22.1 |
0.87 |
||||
| cAutoEF novice vs expert |
1.0 ± 5.1 |
0.99 |
||||
|
|
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| ESV/BSA (mL/cm2): |
||||||
|
|
||||||
| cAutoEF vs BS expert |
-2.6 ± 7.8 |
0.97 |
-1.8 ± 8.0 |
0.97 |
||
| AutoEF vs BS expert |
-4.3 ± 9.3 |
0.95 |
||||
| BS novice vs BS expert |
12.1 ± 12.4 |
0.93 |
||||
| cAutoEF novice vs expert |
0.8 ± 3.5 |
0.99 |
||||
|
Limit of agreement is calculated as bias ± 1.96 SD BS = manual biplane Simpson, BSA = body surface area, cAutoEF = corrected AutoEF, EDV = End-diastolic volume, ESV = End-systolic volume, LVEF = Left ventricular ejection fraction | ||||||
Maret et al. Cardiovascular Ultrasound 2008 6:55 doi:10.1186/1476-7120-6-55 |
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