Figure 1.
Relationships between prenatal care (A), medically induced preterm birth (M), and infant mortality (Y) with measured confounders (C) and unmeasured confounders (U); dashed arrows indicates sources of unmeasured confounding
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.