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.
Figure Melatonin levels for traumatic brain injury (TBI) and control groups
Mean (±SE) salivary melatonin levels were calculated for patients with TBI and controls every half hour during the sampling period (18:00 hours to 00:30 hours). The control group had higher melatonin output across the sampling period than the TBI group (p = 0.031).
