| Value | Category | Cases | |
|---|---|---|---|
| 1 | Essential | 2565 |
90.2%
|
| 2 | Desirable | 235 |
8.3%
|
| 3 | Neither | 39 |
1.4%
|
| 8 | Do not know | 5 |
0.2%
|
| Sysmiss | 6 |