Variations in the spatial relationship between the hyoid bone and the carotid arteries and their clinical significance

Table 1 The topographical types are categorized by sides and sexes, n (%)

Topographical types	Total	Left	Right	P value	Female	Male	P value
Type 0	210 (46.9)	107	103	0.779	69	141	0.012a
Type I	2 (0.4)	0	2		0	2
Type II	0 (0)	0	0		0	0
Type III	0 (0)	0	0		0	0
Type IV	1 (0.2)	0	1		1	0
Type V	0 (0)	0	0		0	0
Type VI	107 (23.9)	50	57		29	78
Type VII	1 (0.2)	0	1		0	1
Type VIII	59 (13.2)	28	31		12	47
Type IX	45 (10)	24	21		7	38
Type X	16 (3.6)	10	6		4	12
Type XI	5 (1.1)	3	2		3	2
Type XII	2 (0.4)	2	0		1	1

^aP value < 0.05, statistically significant result.

The topographical types, as classified by Manta et al[2], are categorized by sides and sexes.