| Time (in days) | Number | Percentage | (Cumulative percentage) |
| <7 | 28 | 48 | 48 |
| 7 - 13 | 19 | 32 | 80 |
| 14 - 20 | 4 | 7 | 86 |
| 21 - 27 | 3 | 5 | 92 |
| ≥28 | 5 | 9 | 100 |