Table 3.
Treatment engagement, completion, and satisfaction by group.
| Variable | All sample (N = 434) |
MI + iCBT group (n = 203) |
iCBT only group (n = 231) |
Statistical significance | |||
|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | ||
| Engagement | |||||||
| Mean number of course logins | 19.42 (11.56) | – | 20.69 (12.79) | – | 18.29 (10.25) | – | t(432) = 1.92, p = 0.06 |
| Mean days between first and last login | 58.09 (29.28) | – | 61.08 (28.88) | – | 54.42 (25.64) | – | t(432) = 2.54, p < 0.01 |
| Mean number of messages sent to therapist | 3.49 (2.83) | 3.56 (3.01) | 3.43 (2.66) | – | t(432) = 0.15, p = 0.88 | ||
| Mean number of messages received from therapist | 8.77 (1.49) | – | 8.75 (1.42) | – | 8.78 (1.56) | – | t(432) = −0.21, p = 0.81 |
| Completion | |||||||
| Mean number of lessons accessed at post-treatment | 4.29 (1.20) | – | 4.35 (1.13) | – | 4.23 (1.26) | – | t(432) = 1.12, p = 0.23 |
| Accessed ≥4 lessons at post-treatment | 344 | 79% | 168 | 83% | 176 | 76% | χ2 (1) = 2.84, p = 0.09 |
| Accessed 5 lessons at post-treatment | 287 | 66% | 138 | 68% | 149 | 65% | χ2 (1) = 0.58, p = 0.45 |
| Satisfactiona | |||||||
| Recommend course to others | 276 | 97% | 135 | 98% | 141 | 97% | χ2 (1) = 4.10, p = 0.52 |
| Course worth their time | 277 | 98% | 133 | 96% | 144 | 99% | χ2 (1) = 1.50, p = 0.22 |
Note. MI = motivational interviewing; iCBT = Internet-delivered cognitive behaviour therapy. While independent samples t-tests were primarily performed on transformed dependent variables, means and standard deviations are reported for non-transformed data in order to facilitate interpretation of results.
a
Analyses were performed on subsample of clients who completed the treatment satisfaction questions (n = 284).