Figure 2. Meta-analysis of all trials comparing clopidogrel plus aspirin with aspirin plus placebo or aspirin alone for stroke.
The size of the squares corresponding to each of the trials is inversely proportional to the variance of studies.
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.