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.
Differences between 12- and 4-week formats (t tests).
| Variables | 12-week group, mean (SD) | 4-week group, mean (SD) | t test (df) | P value |
| Time spent on the website (hours) | 1.10 (1.30) | 4.51 (5.68) | −1.65 (23) | .11 |
| Number of log-ins | 34.33 (59.00) | 5.40 (5.98) | 1.91 (23) | .07 |
| Number of posts and messages | 6.77 (6.49) | 6.40 (6.25) | 0.14 (23) | .89 |
| Self-rated engagement | 5.22 (2.48) | 6.50 (2.41) | 0.27 (23) | .22 |
| Recommend program to others | 0.89 (0.33) | 1.00 (0.0) | 0.03 (23) | .41 |
