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.
In the left panel, nothing is done to account for the structure. On the right, the results are adjusted for principal components, leaving about the same amount of inflation as the case with no population stratification.
