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.
Forest plot showing the association between vitamin D deficiency and the risk of AF in the meta‐analysis with vitamin D levels as a categorical variable. Abbreviations: AF, atrial fibrillation; CI, confidence interval; df, degrees of freedom; IV, inverse variance; SE, standard error.
