Illustration of a long data structure
| Patient number | Success* | Weeks | Treatment† |
|---|---|---|---|
| *1, treatment success; 0, no treatment success. †1, wait and see; 2, injection; 3, physiotherapy. | |||
| 1 | 0 | 3 | 1 |
| 1 | 1 | 6 | 1 |
| 1 | 1 | 12 | 1 |
| 1 | 0 | 26 | 1 |
| 1 | 1 | 52 | 1 |
| 2 | 1 | 3 | 1 |
| 2 | 1 | 6 | 1 |
| n | 0 | 26 | 3 |
| n | 0 | 52 | 3 |