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.
Age and time of insertion. Relating to the time of insertion, a significant difference between participants >30 years (n=34; 41.1±3.4 s) compared to those <30 years (n=66; 27.2±1.2 s) was found (p=0.0001*; 95% CI 8.03 to 19.7). The data are presented as the mean±SD.
