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.
Mean (95% confidence intervals) Roland-Morris Disability Questionnaire (RDQ) and pain numerical rating scores (average pain intensity, prior 24 hours) by treatment adherence over time. Treatment “crossover” was defined as having had the non-randomized procedure prior to the three-month study assessment.
