| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1485 |
98.5%
|
| 1 | Once | 20 |
1.3%
|
| 2 | Few | 2 |
0.1%
|
| 3 | Many | 1 |
0.1%
|
| Sysmiss | 4480 |