4.3. Analysis.
Comparison 4 Bright light therapy versus infrared light therapy, Outcome 3 Incidence of SAD (ITT, assuming all dropouts were depressed).
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.