Table 1. Proportions of side effects following each vagus nerve stimulation surgery.

The table represents the frequency and percentage of side effects experienced by patients after the first, second, third, and fourth vagus nerve stimulation surgeries. Percentages are calculated based on the total population, not the total number of occurrences. This illustrates the prevalence and trends of specific side effects, such as hoarseness, throat pain, coughing, shortness of breath, and others, across multiple surgeries.

	1st operation	2nd operation	3rd operation	4th operation
Hoarseness	19 (38.78)	8 (16.33)	4 (8.16)	1 (2.04)
Throat pain	16 (32.65)	4 (8.16)	2 (4.08)	2 (4.08)
Coughing	19 (38.78)	7 (14.29)	1 (2.04)	0 (0)
Shortness of breath	10 (20.41)	2 (4.08)	0 (0)	0 (0)
Tingling	4 (8.16)	1 (2.04)	1 (2.04)	0 (0)
Muscle pain	8 (16.33)	4 (8.16)	3 (6.12)	0 (0)
Implantation site infection	0 (0)	1 (2.04)	1 (2.04)	0 (0)
Bradycardia	0 (0)	1 (2.04)	0 (0)	0 (0)
Vocal cord paralysis	3 (6.12)	0 (0)	0 (0)	0 (0)
Aspiration	8 (16.33)	3 (6.12)	2 (4.08)	0 (0)
Sleep disturbances	6 (12.24)	0 (0)	1 (2.04)	0 (0)
Other side effects	0 (0)	0 (0)	1 (2.04)	0 (0)
No side effects	20 (40.82)	17 (34.69)	5 (10.2)	3 (6.12)