Research on Association of the Diameter of the Internal Carotid Artery Siphon and Nonarteritic Anterior Ischaemic Optic Neuropathy

Table 2

Comparison between carotid atherosclerosis plaque of the two groups.

	Soft plaque (n)	Hard plaque (n)	Mixed plaque (n)	Plaque detection rate (%)
Observation group	7	5	2	46.67
Control group	3	2	0	16.67
X^2 value	6.239
value	0.012

values were calculated using the chi-square test.