| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 309 |
84.7%
|
| 1 | Once | 27 |
7.4%
|
| 2 | Few | 25 |
6.8%
|
| 3 | Many | 4 |
1.1%
|
| Sysmiss | 7495 |