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.
Subgroup analyses of 6‐minute walking distance (6MWD). Subgroup analyses were performed on the basis of gender, age, and comorbidities. Data of 6MWD at baseline, 7 days, and 14 days after randomization are expressed as mean ± standard error of the mean; the effect estimates were represented as β and 95% confidence interval
