Table 2.

Blood flow improvement (Mean ± SD)

Blood flow velocity (cm/s)	Time	Acupuncture group (n = 68)	Traditional treatment group (n = 52)	t	P
LVA	Before treatment	25.76±3.29	25.67±3.05	0.156	0.876
	After treatment	35.79±4.61*	30.31±3.83*	6.938	< 0.001
RVA	Before treatment	25.60±3.31	26.15±2.99	0.940	0.349
	After treatment	35.06±5.27*	31.38±3.98*	4.194	< 0.001
BA	Before treatment	33.19±4.22	34.08±4.88	1.064	0.290
	After treatment	39.46±5.56*	37.29±4.65*	2.269	0.025

Notes: LVA, left vertebral artery; RVA, right vertebral artery; BA, basilar artery.

^*Compared with the same group before treatment, P < 0.05.