Figure 4.
Indirect Berkson’s fallacy can be prevented by conditioning on H1 = 0 (i.e. not having a disease other than the case or control disease as reason for hospitalization).
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.