- Distribution of the cohort according to the duration of symptoms (in months) prior to intervention.
| Valid | Frequency | Percentage | Cumulative percentage |
|---|---|---|---|
| 12 or less | 7 | 31.8 | 31.8 |
| 12–24 | 3 | 13.6 | 45.4 |
| 24–36 | 1 | 4.6 | 50 |
| 36–48 | 3 | 13.6 | 63.6 |
| 48–60 | 3 | 13.6 | 77.2 |
| 60-72 | 1 | 4.6 | 81.8 |
| 72-84 | 4 | 18.2 | 100.0 |
| Total | 22 | 100 |