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.
Trends in phase III oncology trials with missing visual elements in Kaplan-Meier plots over time. The linear regression over time is shown with the shaded regions representing the 95% CI of the slope. Because of the small number of trials analyzed in this dataset published in the years prior to 2006 (N = 5) or after 2019 (N = 6), data prior to 2006 or after 2019 were excluded from the graph.
