Table 3.

Stepwise variable selection procedure

Variables in model	F-to-remove = 4	Variables not in model	F-to-enter = 4
Co-Gn	13.797	N^Go^Me	0.446
Ar^Go^N	5.298	N^S^Ar	0.130
		S^Ar^Go	5.270
		S-Ar	8.278
		Ar-Go	8.970
		Go-Me	8.686
Wilks lambda = 0.567*

Among the cephalometric variables, only Ar^Go^N, N^Go^Me, N^S^Ar, Co^Gn, S^Ar, Ar^Go, Go^Me, and S^Ar^Go were selected for discriminant analysis. The variables selected from the stepwise variable selection were the mandibular length (Co-Gn) and the superior gonial angle (Ar^Go^N). Significance of Wilks lambda was set at P < 0.05

*P < 0.05