Table 6. Multivariate discriminant analysis of measurements related to bilateral maxillary variables for correct assignment by sex regardless of the side.
| Measurements, Fisher's linear discriminant function coefficients, and equations | Fisher Coefficient ♂ | Fisher Coefficient ♀ | Canonical discriminant functions and classification results |
|---|---|---|---|
| Maximum maxillary sinus height | 0.358 | 0.179 | n = 424 |
| Maximum maxillary sinus depth | 2.354 | 2.258 | Box’s M value = 84.401; significance = 0.089 |
| Maximum maxillary sinus width | -0.330 | -0.356 | Wilks’ λ = 0.605; significance = <0.001 |
| Greater diameter of IOF at axial plane | 2.812 | 2.454 | Eigenvalue = 0.652; canonical correlation = 0.628 |
| Greater diameter of IOF at sagittal plane | -0.668 | -0.971 | Correct prediction % ♂ = 69.20 |
| Distance from the mid-point of the IOF to the AC | 3.243 | 3.231 | Correct prediction % after cross-validation ♂ = 68.00 |
| Length of GPC at sagittal plane | 2.176 | 2.123 | Correct prediction % ♀ = 84.10 |
| Anteroposterior diameter of the GPC at axial plane | 3.728 | 3.259 | Correct prediction % after cross-validation ♀ = 83.70 |
| Distance from the GPC to the NPC | 2.466 | 2.407 | Mean correct prediction % = 78.10 |
| Distance from the GPC to the PNS | 9.498 | 9.039 | Mean correct prediction % after cross-validation = 77.40 |
| Distance from the center of GPF to the AC | -0.324 | -0.429 | |
| Constant | -270.389 | -241.129 | |
| Equations: ♂ = 0.358*Maximum maxillary sinus height + 2.354*Maximum maxillary sinus depth - 0.330*Maximum maxillary sinus width + 2.812*Greater diameter of IOF in the axial plane - 0.668*Greater diameter of IOF in the sagittal plane + 3.243*Distance from the mid-point of the IOF to the AC + 2.176*Length of GPC in the sagittal plane + 3.728*Anteroposterior diameter of the GPC in the axial plane + 2.466*Distance from the GPC to the NPC + 9.498*Distance from the GPC to the PNS - 0.324*Distance from the center of GPF to the AC - 270.389 ♀ = 0.179*Maximum maxillary sinus height + 2.258*Maximum maxillary sinus depth - -0.356*Maximum maxillary sinus width + 2.454*Greater diameter of IOF in the axial plane - 0.971*Greater diameter of IOF in the sagittal plane + 3.231*Distance from the mid-point of the IOF to the AC + 2.123*Length of GPC in the sagittal plane + 3.259*Anteroposterior diameter of the GPC in the axial plane + 2.407*Distance from the GPC to the NP+ 9.039*Distance from the GPC to the PNS - 0.429*Distance from the center of GPF to the AC – 241.129 | |||
Abbreviations: IOF, infraorbital foramen; AC, alveolar crest; GPC, greater palatine canal; PNS, posterior nasal spine; NPC, nasopalatine canal; GPF, greater palatine foramen; MMS, midline maxillary sutur