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 non‐inferiority meta‐analysis of acute urinary retention on the risk difference scale in patients who had rectal surgery with early or late urinary catheter removal A Mantel–Haenszel random‐effects model was used for meta‐analysis. Risk differences are shown with 90 per cent confidence intervals. The dashed line indicates the risk difference non‐inferiority margin set at 15 per cent (ΔNI).
