| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1459 |
96.8%
|
| 1 | Once | 40 |
2.7%
|
| 2 | Few | 7 |
0.5%
|
| 3 | Many | 1 |
0.1%
|
| Sysmiss | 4481 |