Table 4 Inter-observer reproducibility and the influence of echocardiographic image quality for strain rate imaging.
Stress leve | Limits of agreement | p-value | |||||||
|---|---|---|---|---|---|---|---|---|---|
total | <70% | 70–95% | 95% to 100% | total | 70% to 95% vs.<70% | 95–100% vs. 70–95% | <70% vs. 95–100% | ||
SAXM | Baseline | −0.57; 0.44 | −0.34; 0.28 | −0.70; 0.57 | −0.44; 0.30 | 0.035 | 0.408 | 0.037 | 0.376 |
Low stress | −0.78; 0.57 | −0.71; 0.55 | −0.97; 0.67 | −0.36; 0.31 | 0.284 | 0.505 | 0.124 | 0.696 | |
High stress | −0.55; 0.61 | −0.42; 0.52 | −0.56; 0.67 | −0.63; 0.61 | 0.706 | 0.824 | 0.408 | 0.668 | |
SAXB | Baseline | −0.30; 0.33 | −0.41; 0.26 | −0.24; 0.38 | −0.32; 0.28 | 0.085 | 0.177 | 0.047 | 1.000 |
Low stress | −0.30; 0.35 | −0.18; −0.03 | −0.29; 0.41 | −0.28; 0.23 | 0.491 | 0.743 | 0.197 | 0.693 | |
High stress | −0.70; 0.63 | −0.78; 0.67 | −0.62; 0.66 | −0.81; 0.60 | 0.655 | 0.779 | 0.440 | 0.439 | |
AP 4 | Baseline | −0.47; 0.40 | −0.43; 0.42 | −0.51; 0.39 | −0.44; 0.41 | 0.179 | 0.984 | 0.093 | 0.058 |
Low stress | −0.63; 0.48 | −0.34; 0.39 | −0.96; 0.49 | −0.55; 0.31 | 0.428 | 0.257 | 0.139 | 0.365 | |
High stress | −0.67; 0.64 | −0.79; 0.75 | −0.71; 0.62 | −0.13; 0.30 | 0.643 | 0.776 | 0.337 | 0.541 | |
AP 2 | Baseline | −0.23; 0.28 | −0.39; 0.32 | −0.13; 0.24 | −0.15; 0.18 | 0.349 | 0.188 | 0.960 | 0.248 |
Low stress | −0.26; 0.30 | −0.25; 0.36 | −0.18; 0.17 | −0.34; 0.22 | 0.269 | 0.254 | 0.233 | 0.771 | |
High stress | −0.48; 0.51 | −0.40; 0.53 | −0.24; 0.30 | −0.94; 0.72 | 0.135 | 0.027 | 0.190 | 0.920 | |
AP 3 | Baseline | −0.24; 0.32 | −0.29; 0.27 | −0.16; 0.32 | −0.40; 0.30 | 0.299 | 0.123 | 0.908 | 0.711 |
Low stress | −0.26; 0.49 | −0.26; 0.56 | −0.31; 0.48 | −0.18; 0.35 | 0.274 | 0.591 | 0.283 | 0.167 | |
High stress | −0.25; 0.49 | −0.26; 0.46 | −0.30; 0.47 | −0.16; 0.56 | 0.367 | 0.667 | 0.398 | 0.298 | |
