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.
Kaplan-Meier estimate of all-cause mortality in the primary mortality analysis. Patients were divided into tertiles based on average baseline measured impedance from 6–9 months after implantation: Group L measured impedance ≤ 65 ohms, group M 66–72 ohms, group H ≥ 73 ohms.
