Figure 2. Serum Phosphorus Level and Socio-Economic Status.
P = 0.003, middle-class versus upper-class.
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.