Estimating sex using discriminant analysis of mandibular measurements from a modern Greek sample

Bertsatos, Andreas; Athanasopoulou, Konstantina; Chovalopoulou, Maria-Eleni

doi:10.1186/s41935-019-0133-7

Egyptian Journal of Forensic Sciences

Table 5 Discriminant functions based on the right-side measurements

From: Estimating sex using discriminant analysis of mandibular measurements from a modern Greek sample

Equation	Wilks’ Lambda	Sig.	Group centroids and sectioning point	Correctly classified
Equation	Wilks’ Lambda	Sig.	Group centroids and sectioning point	Original	Cross-validated
Function 1^a	0.571	< 0.001	♀-0.945, [−0.0795], ♂0.786	83.20%	81.60%
(BicBR × 0.022) + (BigBR × 0.063) + (MinRBR × − 0.026) + (BL × − 0.043) + (MaxML × 0.183) − 26.447
Function 2^b	0.492	< 0.001	♀− 1.105, [− 0.091], ♂0.923	85.20%	85.20%
(BigBR × 0.052) + (CGL × 0.115) + (MaxML × 0.114) − 25.567
Function 3^b	0.381	< 0.001	♀− 1.411, [− 0.141], ♂1.129	89.90%	84.80%
(BicBR × − 0.037) + (BigBR × 0.103) + (BicrBR × 0.007) + (SyH × 0.032) + (SyBR × − 0.041) + (RH × − 0.017) + (CGL × 0.151) + (MaxBL × − 0.047) + (MaxML × 0.126) − 25.838
Function 4^b	0.481	< 0.001	♀− 1.131, [− 0.0935], ♂0.944	85.70%	85.70%
(BigBR × 0.064) + (CGL × 0.119) + (MaxBL × − 0.063) + (MaxML × 0.139) − 24.786
Function 5^c	0.532	< 0.001	♀− 1.015, [− 0.078], ♂0.859	82.30%	81.80%
(MRH × 0.214) + (PRH × − 0.064) + (CH × 0.09) + (MaxRBR × 0.100) + (MinRBR × − 0.124) − 16.856
Function 6^c	0.633	< 0.001	♀− 0.824, [− 0.0635], ♂0.697	80.20%	79.70%
(CH × 0.180) + (MaxRBR × 0.137) + (MinRBR × − 0.133) − 12.807
Function 7^d	0.594	< 0.001	♀− 0.894, [− 0.0685], ♂0.757	77.10%	77.10%
(MRH × 0.220) + (MaxRBR × 0.029) − 16.028
Function 8^d	0.585	< 0.001	♀− 0.91, [− 0.069], ♂0.772	80.40%	80.40%
(MRH × 0.247) + (MinRBR × − 0.072) − 14.495
Function 9^e	0.519	< 0.001	♀− 1.05, [− 0.0885], ♂0.873	85.90%	84.90%
(BicBR × 0.008) + (BigBR × 0.049) + (MRH × 0.127) + (MaxML × 0.087) − 24.711
Function 10^f	0.498	< 0.001	♀− 1.105, [− 0.101], ♂0.903	84.10%	84.10%
(RH × 0.097) + (CH × 0.072) + (MaxML × 0.102) − 22.935
Function 11^f	0.515	< 0.001	♀− 1.068, [− 0.0975], ♂0.873	84.10%	83.60%
(MRH × 0.063) + (CH × 0.079) + (MaxML × 0.118) − 23.516
Function 12^f	0.494	< 0.001	♀− 1.102, [− 0.091], ♂0.92	84.10%	84.10%
(RH × 0.081) + (CGL × 0.086) + (MaxML × 0.108) − 23.085
Function 13^f	0.498	< 0.001	♀− 1.093, [− 0.0905], ♂0.912	84.10%	83.10%
(MRH × 0.064) + (CGL × 0.096) + (MaxML × 0.111) − 23.417

^aFunction based on Steyn and İşcan (1998)
^bFunction based on Franklin et al. (2008)
^cFunction based on Saini et al. (2011)
^dFunction based on Lin et al. (2014)
^eFunction based on Dong et al. (2015)
^fA combination of the five variables with the highest univariate discriminating capacity. Their corresponding DFA analysis using the stepwise method yielded identical function and accuracy

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