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.
Total number of referrals for chronic kidney disease received before and after the introduction of automatic reporting of the estimated glomerular filtration rate in March 2006. Open circles represent the total number of referrals at biweekly intervals. The solid line represents the regression line; the screened zone represents the 95% prediction interval.
