Table 2. Correlation among tested variables of female group.

Females	Foramen magnum sagittal diameter (mm)	Foramen magnum transverse diameter (mm)	Foramen magnum circumference (mm)	Foramen magnum area (mm)	Head circumference (cm)	Head Width (cm)
Foramen magnum sagittal diameter (mm)	1	0.776**	0.911**	0.897**	0.236	−0.086
Foramen magnum transverse diameter (mm)	0.776**	1	0.826**	0.924**	0.205	0.107
Foramen magnum circumference (mm)	0.911**	0.826**	1	0.951**	0.078	−0.103
Foramen magnum area (mm)	0.897**	0.924**	0.951**	1	0.15	−0.053
Head circumference (cm)	0.236	0.205	0.078	0.15	1	0.194
Head width (cm)	−0.086	0.107	−0.103	−0.053	0.194	1

** Correlation is significant at the 0.01 level.