Table 3.
Intrarater and interrater agreement.
| Intrarater | |||
|---|---|---|---|
| Parameter | ICC | 95% CI | p |
| Energy | 1.000 | 1.000–1.000 | <0.001 |
| Total energy | 1.000 | 1.000–1.000 | <0.001 |
| Entropy | 0.998 | 0.997–0.998 | <0.001 |
| Minimum | 1.000 | 1.000–1.000 | <0.001 |
| Maximum | 1.000 | 1.000–1.000 | <0.001 |
| Mean | 1.000 | 1.000–1.000 | <0.001 |
| Median | 1.000 | 1.000–1.000 | <0.001 |
| IQR | 0.990 | 0.989–0.991 | <0.001 |
| Range | 0.997 | 0.997–0.997 | <0.001 |
| MAD | 0.996 | 0.995–0.996 | <0.001 |
| RMAD | 0.993 | 0.992–0.994 | <0.001 |
| RMS | 1.000 | 1.000–1.000 | <0.001 |
| Skewness | 0.726 | 0.695–0.755 | <0.001 |
| Kurtosis | 0.482 | 0.422–0.536 | <0.001 |
| Variance | 0.993 | 0.992–0.993 | <0.001 |
| Uniformity | 0.992 | 0.991–0.993 | <0.001 |
| 10th percentile | 1.000 | 1.000–1.000 | <0.001 |
| 90th percentile | 1.000 | 1.000–1.000 | <0.001 |
| Interrater | |||
| Parameter | ICC | 95% CI | p |
| Energy | 1.000 | 1.000–1.000 | <0.001 |
| Total energy | 1.000 | 1.000–1.000 | <0.001 |
| Entropy | 0.994 | 0.993–0.995 | <0.001 |
| Minimum | 1.000 | 1.000–1.000 | <0.001 |
| Maximum | 1.000 | 1.000–1.000 | <0.001 |
| Mean | 1.000 | 1.000–1.000 | <0.001 |
| Median | 1.000 | 1.000–1.000 | <0.001 |
| IQR | 0.981 | 0.987–0.984 | <0.001 |
| Range | 0.987 | 0.985–0.989 | <0.001 |
| MAD | 0.983 | 0.979–0.985 | <0.001 |
| RMAD | 0.982 | 0.979–0.985 | <0.001 |
| RMS | 1.000 | 1.000–1.000 | <0.001 |
| Skewness | 0.525 | 0.471–0.575 | <0.001 |
| Kurtosis | 0.319 | 0.240–0.389 | <0.001 |
| Variance | 0.962 | 0.956–0.966 | <0.001 |
| Uniformity | 0.988 | 0.986–0.990 | <0.001 |
| 10th percentile | 1.000 | 1.000–1.000 | <0.001 |
ICC: intraclass correlation coefficient. 95% CI: 95% confidence interval. p: significance level. Intra- and interrater agreement shows excellent agreement for all first-order parameters except for skewness and kurtosis, which are known to be prone to outliers.