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Table 4 Intra- and inter-observer variability (N = 20)

From: Dissecting myocardial mechanics in patients with severe aortic stenosis: 2-dimensional vs 3-dimensional-speckle tracking echocardiography

MeasurementIntra-observerInter-observer
DifferenceICCDifferenceICC
2D
 GLS (%)−0.08 ± 0.170.930.40 ± 0.950.88
 GRS (%)−0.12 ± 1.170.85−0.15 ± 4.700.86
 GCS (%)−0.33 ± 2.590.921.01 ± 2.880.90
 Twist (°)0.23 ± 2.690.860.06 ± 1.920.93
3D
 GLS (%)0.40 ± 0.780.95−0.08 ± 1.460.84
 GRS (%)0.85 ± 0.890.871.38 ± 3.810.82
 GCS (%)0.25 ± 3.720.900.67 ± 3.480.89
 Twist (°)−0.07 ± 0.760.870.01 ± 0.650.89
  1. Abbreviations: ICC Intraclass correlation coefficient, 2D 2-dimensional, GLS Global longitudinal strain, GCS Global circumferential strain, GRS Global radial strain, 3D 3-dimensional