Figure 2.
Types of pain reduction of each cluster. Data are presented as mean ± SD (n = 101). NRS, numerical rating 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.