Table 2.

Conventional carotid ultrasound parameters in the IMT normal group and the IMT thickening group

Variable	IMT normal group, n = 100	IMT thickening group, n = 50	P value
CCA inner diameter (mm)	6.91 ± 0.5	6.73 ± 0.4	0.257
CCA IMT (mm)	0.69 ± 0.16	0.99 ± 0.19	0.000*
PSV (cm/s)	91.3 ± 20.7	95.4 ± 18.8	0.188
RI	0.72 ± 0.05	0.69 ± 0.08	0.358
WSS of CCAa	7.81 ± 2.72	6.94 ± 1.38	0.034*

* P < 0.05

^aComputed by Hagen–Poiseuille formula