| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 74 |
7.1%
|
| 1 | Once | 97 |
9.3%
|
| 2 | Few | 437 |
42.1%
|
| 3 | Many | 431 |
41.5%
|
| Sysmiss | 6821 |