| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1714 |
97.4%
|
| 1 | Once | 27 |
1.5%
|
| 2 | Few | 11 |
0.6%
|
| 3 | Many | 8 |
0.5%
|
| Sysmiss | 5270 |