Fig. 3.
Forest plots of hospital stay in laminoplasty and laminectomy groups. SD, standard deviation; SMD, standardized mean difference; IV, inverse variance; CI, confidence interval; df, degrees of freedom.
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.