Intra-observer intraclass correlation coefficient and Dahlberg’s method error.
| Variable | unit | Mean of first measurement (m1) | Mean of second measurement (m2) | Mean of absolute difference m1-m2 | Dahlberg’s error | Intraclass Correlation | 95% CI Upper Bound | 95% CI Lower Bound |
|---|---|---|---|---|---|---|---|---|
| Tooth volume at T0 | mm3 | 485.76±112.5 | 483.1±113.9 | 5.01 | 3.71 | 0.999 | 0.997 | 1.000 |
| Tooth volume at T1 | mm3 | 468.97±117.8 | 465.77±118.4 | 4.77 | 3.58 | 0.999 | 0.998 | 1.000 |
| Root volume at T0 | mm3 | 203.18±39.22 | 201.69±40.18 | 3.85 | 3.38 | 0.993 | 0.975 | 0.998 |
| Root volume at T1 | mm3 | 190.19±37.33 | 188.77±40.72 | 3.51 | 2.92 | 0.995 | 0.983 | 0.999 |
| Root volume change (Root volume T1-Root volume T0) | mm3 | -12.99 | -12.93 | 3.80 | 2.78 | 0.942 | 0.812 | 0.983 |
T0: Pretreatment. T1: Post-treatment. CI: Confidence interval. mm3: cubic millimeter.