Fig 1. The rate of missing patient identifiers over time for 112 NNUs included in NNRD and national laboratory surveillance data.
Moving average based on three quarters.
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.