Table 3. Nested Procrustes ANOVA on shape for identifying scanning-related error.
We applied the following nested hierarchical structure: Specimen > Scan replica > Operator > Landmark replica. The R-squared values (Rsq) give an estimate of the relative contribution of each factor to the total shape variation.
| Variables | Df | SS | MS | Rsq | F | Z | Pr(>F) |
|---|---|---|---|---|---|---|---|
| Extended Scanner Dataset | |||||||
| Specimen | 21 | 0.628 | 0.030 | 0.951 | 261.095 | 20.324 | 0.001 |
| Specimen:Scan replica | 22 | 0.005 | 0.000 | 0.007 | 1.895 | 23.964 | 0.001 |
| Specimen:Scan replica:Operator | 44 | 0.017 | 0.000 | 0.026 | 3.451 | 27.049 | 0.001 |
| Residuals (Landmark replica) | 88 | 0.010 | 0.000 | 0.015 | |||
| Total | 175 | 0.660 | |||||