Number of the 225 patients responding in each calling round of the intensified 6-month follow-up (FU), given in %, numbers and 95% CI
| Calling round | Completed FU | n (95% CI) |
| 1 | 40% | 91 (77 to 104) |
| 2 | 17% | 38 (27 to 50) |
| 3 | 6% | 13 (7 to 20) |
| 4 | 0% | 1 (0 to 2) |
| Total | 64% | 143 (128 to 158) |