Table 5: Inter- and intraobserver variability
N=884 N=884 Mean SD Lower limit Upper limit
Interobserver
ES LS epi (%)
-0.4
2.94
-6.16
5.36
ES LS myo (%) -0.42 3.11 -6.52 5.68
ES LS endo (%) -0.38 3.75 -7.73 6.97
Global SR S (1/s) -0.02 0.24 -0.49 0.45
Global SR E (1/s) 0.04 0.36 -0.67 0.75
Global SR A (1/s) 0.03 0.3 -0.56 0.62
Intraobserver
ES LS epi (%)
-0.18
3.28
-6.61
6.25
ES LS myo (%) -0.09 3.53 -7.01 6.83
ES LS endo (%) 0.002 4.34 -8.50 8.51
Global SR S (1/s) -0.04 0.28 -0.59 0.51
Global SR E (1/s) 0.005 0.41 -0.80 0.81
Global SR A (1/s) 0.04 0.32 -0.059 0.67
SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction SR: strain rate; epi: epicardial; myo: myocardial; endo: endocardial; ES: end-systolic; LS: longitudinal strain; SR S: strain rate at peak systole; SR E: strain rate in early diastole; SR A: strain rate in atrial contraction