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 survival in propensity score–matched patients 50 years and older. Variables used for propensity score matching included hypertension, diabetes, chronic obstructive lung disease, heart failure, obesity, nicotine dependence, and history of stroke, with exclusion of patients older than 50 years.
