Figure 5.
(A) Funnel plot of VAS at 24 h. (B) Begg's test of VAS at 24 h. VAS = visual analog scale.
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.