| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 9 |
0.4%
|
| 2 | Once | 22 |
1.1%
|
| 3 | Three times | 1026 |
50.7%
|
| 4 | Five times | 227 |
11.2%
|
| 5 | Until all repeat | 725 |
35.8%
|
| 98 | Other | 15 |
0.7%
|
| Sysmiss | 1303 |