| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1536 |
95.9%
|
| 1 | Once | 38 |
2.4%
|
| 2 | Few | 17 |
1.1%
|
| 3 | Many | 10 |
0.6%
|
| Sysmiss | 5420 |