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.
Results and treatment group sizes of all studies reporting Roland Morris Disability Questionnaire (RMDQ) presented in the order of methodological quality. X and Ο represent the RMDQ mean values and the bars represent the standard deviation.
