| Usage data | OS 1 | OS 2 | OS 3 | OS 4 | OS 5 | OS 6 | OS 7 |
| Average logins per week (per module) | 5.0 | 3.4 | 3.6 | 3.2 | 2.7 | 2.5 | 1.8 |
| Average downloads of work sheet/week | 1.9 | 1.3 | 1.5 | 1.1 | 1.0 | 0.9 | – |
| Average downloads of in-session slides/week | 1.3 | 1.0 | 1.2 | 0.9 | 0.8 | 0.6 | 0.4 |
| Average logins during follow-up period | 4.5 |
--- not at all helpful (%); -- not helpful (%); - of little help (%); +somewhat helpful (%); ++helpful (%); +++very helpful (%).
*Tentatively significant.
†Highly significant.
OS, online session.