Therapeutic effectiveness of intratympanic and retroauricular methylprednisolone sodium succinate for refractory sudden sensorineural hearing loss in diabetic patients

Table 3 Adverse reactions of two groups, n (%)

Adverse reactions	Control group (n = 40)	Research group (n = 44)	χ2	P value
Tympanic membrane perforation	1 (2.50)	0 (0.00)
Middle ear infections	1 (2.50)	0 (0.00)
Burning sensation	2 (5.00)	1 (2.27)
Vertigo	1 (2.50)	2 (4.55)
Tinnitus	1 (2.50)	1 (2.27)
Total	6 (15.00)	4 (9.09)	0.698	0.404