Table 4 Intra- and inter-reader reproducibility of two observers in a randomly selected sample of 50 patients.
Observer 1 | Observer 2 | Interobserver agreement | ||||||
|---|---|---|---|---|---|---|---|---|
First measurement | Second measurement | Intra-class correlation coefficient | First measurement | Second measurement | Intra-class correlation coefficient | Intra-class correlation coefficient between first measurements | Intra-class correlation coefficient between second measurements | |
Mean ± SD | Mean ± SD | Coefficient (95% CI), P value | Mean ± SD | Mean ± SD | Coefficient (95% CI), P value | Coefficient (95% CI), P value | Coefficient (95% CI), P value | |
Sinus of Valsalva MD (mm) | 34.4 ± 3.6 | 32.0 ± 4.0 | .832 (.139–.942), < .001 | 35.0 ± 4.0 | 35.9 ± 4.1 | .797 (.640–.885), < .001 | .831 (.704–.904), < .001 | .725 (− .201–.915), < .001 |
Sinotubular junction MD (mm) | 30.6 ± 3.9 | 28.4 ± 3.9 | .854 (.184–.951), < .001 | 31.2 ± 3.7 | 31.2 ± 3.9 | .934 (.884–.963) < .001 | .923 (.860–.957), < .001 | .816 (− .110–.944), < .001 |
Tubular MD (mm) | 34.5 ± 4.0 | 34.5 ± 4.0 | .999 (.999–1.000), < .001 | 35.4 ± 3.6 | 35.1 ± 3.6 | .969 (.944–.982), < .001 | .892 (.790–.941), < .001 | .915 (.847–.952), < .001 |
Arch MD (mm) | 30.1 ± 2.8 | 30.1 ± 2.8 | .988 (.997–.999), < .001 | 30.7 ± 2.9 | 30.5 ± 2.8 | .945 (.904–.969), < .001 | .888 (.794–.938), < .001 | .928 (.866–.960), < .001 |
DA-mid MD (mm) | 24.6 ± 2.4 | 24.6 ± 2.4 | .997 (.996–.999), < .001 | 25.0 ± 2.6 | 25.1 ± 2.5 | .976 (.958–.987), < .001 | .959 (.921–.978), < .001 | .967 (.898–.986), < .001 |
