2.3. Analysis.
Comparison 2 Bright light alone at night versus normal light (300 lux) plus placebo capsule, Outcome 3 Sleep onset latency, next day (Actiwatch ‐ minutes).
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.