| Value | Category | Cases | |
|---|---|---|---|
| 1 | Essential | 2864 |
90.6%
|
| 2 | Desirable | 262 |
8.3%
|
| 3 | Neither | 32 |
1%
|
| 8 | Do not know | 4 |
0.1%
|
| Sysmiss | 2 |