| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1745 |
98.4%
|
| 1 | Once | 22 |
1.2%
|
| 2 | Few | 3 |
0.2%
|
| 3 | Many | 4 |
0.2%
|
| Sysmiss | 4214 |