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.
The percentage change of PPTs at 11 sites in the two groups after the treatment (mean and SE, RA, n = 26, and SA, n = 24). ∗ indicates that at the end of treatment, the mean percentage changes in PPTs of sites Numbers 7 and 8 in RA were significantly larger than those in SA.
