| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1557 |
98.1%
|
| 1 | Once | 21 |
1.3%
|
| 2 | Few | 5 |
0.3%
|
| 3 | Many | 4 |
0.3%
|
| Sysmiss | 5434 |