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.
Learning curve
| Screw position | Correct (n) (%) |
Minor breach (n) (%) |
Major breach (n) (%) |
Total (n) (%) |
|---|---|---|---|---|
| First 20 screws (%) | 32 (66) |
10 (21) |
6 (13) |
48 (100) |
| Following screws (%) | 34 (74) |
10 (22) |
2 (4) |
46 (100) |
| Total (%) | 66 (70) |
20 (21) |
8 (9) |
94 (100) |
