Table 5. The occurence of porotic hyperostosis.

	Bones	0	%	1	%	2	%	3	%	∑
Sub-adults	Left orbit	5	62.5	2	25.0	1	12.5	0	0.0	8
	Right orbit	7	70.0	1	10.0	2	20.0	0	0.0	10
	Left parietal bone	9	90.0	0	0.0	1	10.0	0	0.0	10
	Right parietal bone	9	100.0	0	0.0	0	0.0	0	0.0	9
	Occipital bone	7	100.0	0	0.0	0	0.0	0	0.0	7
Adults	Left orbit	16	72.7	4	18.2	2	9.1	0	0.0	22
	Right orbit	19	86.4	1	4.5	2	9.1	0	0.0	22
	Left parietal bone	23	100.0	0	0.0	0	0.0	0	0.0	23
	Right parietal bone	24	100.0	0	0.0	0	0.0	0	0.0	24
	Occipital bone	22	95.7	1	4.3	0	0.0	0	0.0	23
Total	Left orbit	21	70.0	6	20.0	3	10.0	0	0.0	30
	Right orbit	26	81.2	2	6.3	4	12.5	0	0.0	32
	Left parietal bone	32	97.0	0	0.0	1	3.0	0	0.0	33
	Right parietal bone	33	100.0	0	0.0	0	0.0	0	0.0	33
	Occipital bone	29	96.7	1	3.3	0	0.0	0	0.0	30

0 = not present, 1 = porotic grade, 2 = cribrotic grade, 3 = trabecular grade