Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
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A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Measurements performed (some studies performed several measurements).
| Measurement | Occurrences per stage | ||
|
|
Preuse (11 studies), n | Initial use (7 studies), n | Sustained use (40 studies), n |
| Customized survey | 7 | 2 | 28 |
| Standardized survey | 2 | 2 | 8 |
| Focus groups (qualitative) | 2 | 1 | 1 |
| Interviews (qualitative) | 1 | 1 | 4 |
| Completion of task | 0 | 1 | 1 |
| Usage | 0 | 0 | 6 |
