| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1478 |
96.8%
|
| 1 | Once | 33 |
2.2%
|
| 2 | Few | 13 |
0.9%
|
| 3 | Many | 3 |
0.2%
|
| Sysmiss | 5503 |