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.
Effects of Different Types of Interventions on Screw Pullout Strength.
| Group | Pullout strength, N | |
|---|---|---|
| Mean (n)a | 95% confidence intervals | |
| Control | 138 | 88-189 |
| Plastic | 255 | 177-333 |
| Suture | 228 | 149-308 |
| Wire | 396 | 244-548 |
a 15 measures per treatment group.
