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.
Shown are one minus Kaplan–Meier survival estimates of the cumulative percentage of children who had a recurrent episode of acute otitis media, according to trial group. The median time to a first occurrence of acute otitis media was longer in the tympanostomy-tube group than in the medical-management group (4.34 months vs. 2.33 months; hazard ratio, 0.68; 95% confidence interval, 0.52 to 0.90).
