Table 2 Follow-up rate and methods of response
Follow-up outcome | Baseline | 3 months | 6 months | 12 months |
|---|---|---|---|---|
Number of valid responses at time point | 19 | 15 | 12 | 18 |
Offered paper based CRF | 19 | 19 | 18 | 18 |
Offered web-based CRF | 0 | 0 | 10 | 18 |
Completed web-based CRF | 0 | 0 | 2 | 6 |
Completed postal CRF | 19 | 15 | 10 | 12 |