Table 4.
Differences between matched and mismatched groups for acceptability of activity advice, website usability, and time spent on the website (mean, SD).
| Total study population (n = 428) |
Matched (n = 137) |
Mismatched (n = 291) |
t test | df | ||
| Physical activity advice acceptabilitya | ||||||
| Advice content | 3.2 (0.7) | 3.2 (0.6) | 3.2 (0.7) | 0.10 | 368 | |
| Advice layout | 3.9 (0.5) | 3.8 (0.5) | 3.9 (0.5) | 1.53 | 368 | |
| Website usabilitya | ||||||
| Layout | 3.7 (0.5) | 3.7 (0.5) | 3.7 (0.6) | 0.05 | 426 | |
| Ease of use | 4.0 (0.5) | 4.0 (0.5) | 4.0 (0.5) | 0.21 | 426 | |
| Time spent on website (minutes) | 13.7 (12.2) | 12.1 (9.6) | 14.4 (13.1) | 2.16b | 621 | |
a On a scale ranging from 1, strongly disagree, to 5, strongly agree.
b P = .31.