[Retracted] Effects of Continuous Infusion of Lidocaine under Ultrasound-Guided Cervical Sympathetic Ganglion Catheterization on Cerebral Hemodynamics and Thermal Imaging Characteristics of Head and Neck in Patients with Angioneurotic Headache

Table 2

Comparison of postoperative complications and headache in two groups of patients.

Group	Control group (n = 40)	Observation group (n = 40)	χ^2 value	value
Blurred vision	1 (2.50)	0 (0)	1.013	1.000
Decreased appetite	2 (5.00)	1 (2.50)	0.346	1.000
Feeling sick and vomiting	1 (2.50)	2 (5.00)	0.346	1.000
Rash	2 (5.00)	1 (2.50)	0.346	1.000
Stomach ache	2 (5.00)	1 (2.50)	0.346	1.000
Overall incidence	8 (20.00)	5 (12.50)	0.827	0.363