| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1452 |
96.2%
|
| 1 | Once | 40 |
2.7%
|
| 2 | Few | 11 |
0.7%
|
| 3 | Many | 6 |
0.4%
|
| Sysmiss | 4479 |