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.
This DAG provides the framework for Test 2. When D is not associated with Md, there is no association between D and T*, despite the conditioning event, using rules of DAGs. This figure represents these random variables within each stratum of G.
