| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1753 |
97.9%
|
| 1 | Once | 22 |
1.2%
|
| 2 | Few | 6 |
0.3%
|
| 3 | Many | 9 |
0.5%
|
| Sysmiss | 4198 |