| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 4433 |
98.4%
|
| 2 | Once | 33 |
0.7%
|
| 3 | More than once | 23 |
0.5%
|
| 4 | Not applicable | 1 |
0%
|
| Sysmiss | 16 |