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.
Information about keywords in literatures.
| Keywords | Publication usage frequency | Percentage |
|---|---|---|
| Usefulness | 140 | 6.3% |
| User experience | 84 | 3.8% |
| User satisfaction | 28 | 1.3% |
| High usability | 26 | 1.2% |
| Usability assessment | 23 | 1.0% |
| Usability test | 23 | 1.0% |
| Usability | 21 | 0.9% |
| Website | 21 | 0.9% |
Note: occurring percentage of other keywords less than 0.9% is not listed here.
