Table 5. Distribution of frequency scores before and after vagus nerve stimulation surgery.

The table presents the number of patients categorized by seizure frequency before and after undergoing VNS therapy. Seizure frequency was classified into three categories: 1 (several times per month), 2 (less than once per month), and 3 (no tremors in the year preceding/following the intervention). Before VNS surgery, 46 patients experienced seizures several times per month, three patients had seizures less than once per month, and no patients were seizure-free. After VNS surgery, the number of patients experiencing seizures several times per month decreased to 27, while those experiencing seizures less than once per month increased to 15. Notably, seven patients reported being seizure-free in the year following surgery. These results demonstrate the effectiveness of VNS therapy in significantly reducing seizure frequency among patients with multifocal refractory epilepsy.

VNS: vagus nerve stimulation

Frequency score	Count before VNS	Count after VNS
1	46	27
2	3	15
3	0	7