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.
Differences in Knee injury and Osteoarthritis Outcome Scores (KOOS) over time, stratified by patient sex. Scores are presented as medians; the ends of the boxes define the 25th and 75th percentiles, and the whiskers depict the 1st and 4th quartiles. The dots depict the statistical outliers.
