| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1585 |
98.8%
|
| 1 | Once | 12 |
0.7%
|
| 2 | Few | 4 |
0.2%
|
| 3 | Many | 4 |
0.2%
|
| Sysmiss | 5416 |