| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1488 |
97.9%
|
| 1 | Once | 24 |
1.6%
|
| 2 | Few | 6 |
0.4%
|
| 3 | Many | 2 |
0.1%
|
| Sysmiss | 5510 |