Table 7.
2 by 2 table of exposure status vs. disease status.
| Case | Control | |
|---|---|---|
| Exposed | a | b |
| Unexposed | c | d |
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.