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.
Pooled estimates of nociceptive flexion reflex (NFR) threshold standardized mean difference between clinical populations and healthy matched controls. Negative effect represents reduced NFR threshold in the clinical population compared to controls.
