Table 4 Inter-observer reproducibility as evaluated by the absolute difference, coefficient of variation (COV) (expressed in %) and interclass correlation (ICC) between results from the first (observer1) and second (observer2) observers who post analyzed the same CMR examinations.
Observer1 | Observer2 | Absolute difference | COV | ICC [95%CI] (p value) | |
|---|---|---|---|---|---|
LVM (µg) | 84.12 (10.37) | 81.28 (10.00) | 7.79 (5.29) | 8.91 (5.81) | 0.583 [0.321–0.762] (<0.001) |
LVEDV (µL) | 57.72 (11.68) | 56.96 (10.44) | 4.20 (4.63) | 6.78 (6.90) | 0.843 [0.715–0.917] (<0.001) |
LVESV (µL) | 17.36 (7.67) | 17.67 (7.29) | 2.38 (1.77) | 13.22 (10.35) | 0.922 [0.854–0.959] (<0.001) |
LVEF (%) | 70.49 (8.96) | 69.61 (7.67) | 3.65 (2.48) | 5.06 (3.21) | 0.861 [0.746–0.926] (<0.001) |
RVEDV (µL) | 27.74 (10.26) | 23.64 (6.95) | 5.69 (5.30) | 18.09 (13.87) | 0.630 [0.387–0.792] (<0.001) |
RVESV (µL) | 9.86 (7.58) | 7.10 (5.47) | 3.22 (3.40) | 29.77 (19.49) | 0.763 [0.584–0.871] (<0.001) |
RVEF (%) | 66.65 (14.09) | 71.93 (12.57) | 9.65 (6.85) | 13.80 (11.45) | 0.624 [0.378–0.788] (<0.001) |
Ecc base | −15.49 (1.84) | −14.88 (1.22) | 0.85 (0.82) | 5.69 (5.33) | 0.737 [0.188–0.940] (0.008) |
Ecc apex | −15.87 (4.83) | −15.27 (4.81) | 0.70 (0.52) | 5.01 (3.61) | 0.984 [0.932–0.997] (<0.001) |
Err base | 5.01 (2.41) | 6.02 (2.09) | 1.19 (0.69) | 21.52 (13.03) | 0.826 [0.398–0.962] (0.002) |
Err apex | 5.47 (1.95) | 5.70 (1.87) | 0.65 (0.68) | 10.91 (9.72) | 0.885 [0.566–0.975] (<0.001) |
Ell | −13.64 (2.35) | −14.28 (2.77) | 0.79 (0.56) | 5.60 (3.56) | 0.933 [0.729–0.986] (<0.001) |
