| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1451 |
96.1%
|
| 1 | Once | 45 |
3%
|
| 2 | Few | 10 |
0.7%
|
| 3 | Many | 4 |
0.3%
|
| Sysmiss | 4478 |