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.
This is based on moving averages that were calculated by taking the arithmetic mean of the observed values from each month with the values from the month before and after. CDC indicates Centers for Disease Control and Prevention; HF, heart failure; MI, myocardial infarction.
