Fig. 6.
Funnel plots test publication bias as following A:Stress (n = 40 studies); B: Anixity (n = 73 studies) C: Depression (n = 62); and D: Sleep Disterbance (n = 18).
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.