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.
Effect of risk group on progression-free survival and overall survival within the randomized treatment arms. The squares and lines show the estimated odds ratio and their 95% confidence interval (95% CI). The size of each square is proportional to the amount of information in the subgroup. Overall estimates are shown by a diamond, with the width representing the 95% CI. O-E: observed minus expected; V: variance; NS=not significant.
