| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1020 |
63.9%
|
| 2 | Once | 283 |
17.7%
|
| 3 | A few times (≤ 5) | 225 |
14.1%
|
| 4 | Many times (> 5) | 69 |
4.3%
|
| Sysmiss | 187 |