Table 2.
Univariate associations of usage metrics of E-couch with clinically significant change in depression in CREDO.
| Variable | Overall sample, mean (SD) |
Clinically significant improvement, mean (SD)a |
Difference (95% CI) | P value | Effect size (Cohen’s d) |
|
|
|
|
Yes (n=94) | No (n=120) |
|
|
|
| Proportion of 12 modules completed | 0.9 (0.3) | 0.9 (0.3) | 0.9 (0.3) | 0.03 (–0.05, 0.11) | .42c | 0.11 |
| Proportion of all 18 activities completed | 0.5 (0.3) | 0.6 (0.3) | 0.5 (0.3) | 0.07 (–0.20, 2.70) | .09b | 0.23 |
| Total number of activities completed (range 0-44) | 11.9 (9.1) | 13.6 (9.5) | 10.8 (8.7) | 2.89 (0.44, 5.34) | .02c | 0.32 |
| Number of program log-ins (range 1-65) | 18.7 (8.3) | 18.9 (7.2) | 18.6 (9.1) | 0.23 (–2.04, 2.49) | .84b | 0.03 |
| Total number of minutes spent online in program | 318.3 (204.3) | 351.1 (206.4) | 292.6 (199.8) | 58.42 (3.34, 113.47) | .04b | 0.29 |
| Average number of activities completed per log-in (range 0-2.4) | 0.6 (0.5) | 0.8 (0.4) | 0.6 (0.5) | 0.20 (0.07, 0.33) | .04b | 0.46 |
| Number of modules completed per log-in (range 0-2.0) | 0.6 (0.3) | 0.6 (0.3) | 0.6 (0.2) | –0.01 (–0.08, 0.06) | .73b | 0.06 |
| Average number of minutes online per log-in (range 1.6-63.8) | 17.3 (8.9) | 19.1 (10.4) | 15.9 (7.2) | 3.26 (0.88, 5.63) | .01b | 0.37 |
| Average number of minutes online per module (range 5.6-165.8) | 33.2 (23.8) | 35.3 (22.9) | 31.5 (24.5) | 3.80 (2.69, 10.30) | .25b | 0.16 |
| Combined measured (range 0.0-30.0) | 19.5 (7.5) | 20.4 (7.0) | 18.8 (7.8) | 1.595 (–0.43, 3.62) | .12b | 0.21 |
aDefined as a reduction of 5 points or more on the PHQ-9.
b t test analysis.
cMann-Whitney U test.
dCombined measure of number of compulsory activities completed (of possible 18) and number of modules completed (of possible 12) with scores ranging from 0-30.