| Components | Devoted time | |||
| Up to 2 months | 2 - 3 months | 4 - 12 months | More than a year | |
| Forum/discussion board | 27.3% | 27.3% | 18.2% | 27.3% |
| Lecture | 20.6% | 25.5% | 36.8% | 17.0% |
| Test | 17.4% | 24.8% | 40.5% | 17.4% |
| Seminar | 22.4% | 25.5% | 37.8% | 14.3% |
| Additional material | 19.0% | 21.4% | 35.7% | 23.8% |
| Other | 11.1% | 44.4% | 11.1% | 33.3% |