Figure 2.
Temporal trends in the mean birth weight of all live, singleton births in England and Wales (1986–2012) with years of change.
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.