Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Forest plot of secondary outcomes about n-VNS for migraine. (A): ≥50% responder rate about n-VNS for migraine. (B): headache intensity of n-aVNS for migraine according to different control groups. (C): monthly acute medication reduction days about n-VNS for migraine. n-VNS, non-invasive vagus nerve stimulation; n-aVNS, non-invasive auricular vagus nerve stimulation.
