Table 3.

Overall dimensions of foramina in each sex and their associations with the sex

	Mean±SD
Foramen and its dimensions	Male (n=65×2)	Female (n=31×2)	P a
Ovale
Length (mm)	8.05±1.04	7.25±1.02	<0.001
Width (mm)	3.80±0.63	3.43±0.62	0.008
Area (mm2)	24.29±6.15	19.68±5.00	<0.001
Spinosum
Length (mm)	2.49±0.30	2.15±0.36	<0.001
Width (mm)	2.00±0.30	1.83±0.25	0.007
Area (mm2)	3.95±0.90	3.14±0.81	<0.001
Rotundum
Height (mm)	2.44±0.50	2.34±0.46	0.37
Width (mm)	2.44±0.56	2.31±0.53	0.29
Area (mm2)	4.72±1.55	4.29±1.32	0.18

^aIndependent sample t-test.