Table 4. Univariate discriminant analysis and cross-validation for measurements related to bilateral maxillary variables.

Parameter	Wilks’ λ		Box’s M		Correct prediction % ♂	Correct prediction % after cross-validation ♂	Correct prediction % ♀	Correct prediction % after cross-validation ♀	Mean correct prediction %	Mean correct prediction % after cross-validation
	Value	Significance	Value	Significance
Maximum maxillary sinus height	0.748	<0.001	0.007	0.934	60.50	60.50	81.70	81.70	73.10	73.10
Maximum maxillary sinus depth	0.837	<0.001	0.450	0.503	49.40	49.40	81.30	81.30	68.40	68.40
Maximum maxillary sinus width	0.895	<0.001	0.633	0.427	44.20	44.20	80.60	79.80	65.80	65.30
Greater diameter of IOF at axial plane	0.920	<0.001	0.336	0.563	32.60	32.60	80.60	80.60	61.10	61.10
Greater diameter of IOF at sagittal plane	0.894	<0.001	0.527	0.468	39.00	39.00	82.10	81.30	64.60	64.20
Greater diameter of IOF at coronal plane	0.945	<0.001	1.480	0.224	25.00	25.00	83.30	83.30	59.70	59.70
Distance from the mid-point of the IOF to the AC	0.956	<0.001	2.239	0.135	27.30	27.30	88.10	88.10	63.40	63.40
Length of GPC at sagittal plane	0.872	<0.001	1.269	0.261	41.90	41.90	82.10	82.10	65.80	65.80
Anteroposterior diameter of the GPC at axial plane	0.878	<0.001	0.067	0.796	38.40	38.40	81.00	81.00	63.70	63.70
Distance from the GPC to the pterygoid hamulus	0.948	<0.001	2.883	0.090	24.40	24.40	82.90	82.50	59.20	59.00
Distance from the GPC to the NPC	0.973	0.001	2.984	0.084	19.80	19.20	91.30	90.90	62.30	61.80
Distance from the GPC to the PNS	0.918	<0.001	2.218	0.137	34.90	34.90	79.80	79.80	61.60	61.60
Distance from the medial wall of GPF to the MMS	0.987	0.021	0.468	0.495	7.00	4.70	95.60	95.60	59.70	58.70
Distance from the center of GPF to the AC	0.915	<0.001	0.027	0.871	34.90	34.90	85.30	83.70	64.90	63.90

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 suture