| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1563 |
97.6%
|
| 1 | Once | 26 |
1.6%
|
| 2 | Few | 9 |
0.6%
|
| 3 | Many | 3 |
0.2%
|
| Sysmiss | 5420 |