Table 6. The occurence of porotic hyperostosis according to sex.

	Grade	Males		Females		Sum
		N	%	N	%	N
Left orbit	0	4	57.14	9	75.0	13
	1	1	14.29	3	25.0	4
	2	2	28.57	0	0.0	2
	3	0	0.00	0	0.0	0
			100.0		100.0
Right orbit	0	4	66.7	11	91.7	15
	1	0	0.0	1	8.3	1
	2	2	33.3	0	0.0	2
	3	0	0.0	0	0.0	0
			100.0		100.0
Left parietale	0	7	100.0	12	100.0	19
	1	0	0.0	0	0.0	0
	2	0	0.0	0	0.0	0
	3	0	0.0	0	0.0	0
			100.0		100.
Right parietale	0	7	100.0	13	100.0	20
	1	0	0.0	0	0.0	0
	2	0	0.0	0	0.0	0
	3	0	0.0	0	0.0	0
			100.0		100.0
Occipital bone	0	6	100.0	12	100.0	18
	1	0	0.0	0	0.0	0
	2	0	0.0	0	0.0	0
	3	0	0.0	0	0.0
			100.0		100.0

0 = Not present, 1 = Porotic grade, 2 = Cribrotic grade, 3 = Trabecular grade