| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1485 |
97.2%
|
| 1 | Once | 30 |
2%
|
| 2 | Few | 9 |
0.6%
|
| 3 | Many | 4 |
0.3%
|
| Sysmiss | 5502 |