T in weeks | Event |
---|---|
0 | Invitation for first face-to-face encounter. |
1 | Face-to-face contact |
4 | Telephone contact |
8 | Face-to-face contact |
12 | Telephone contact |
16 | Telephone contact |
20 | Face-to-face contact |
23 | Telephone contact |
26 | First follow-up measurement |
52 | Second follow-up measurement. |