| Value | Category | Cases | |
|---|---|---|---|
| 1 | Essential | 2552 |
89.7%
|
| 2 | Desirable | 269 |
9.5%
|
| 3 | Neither | 20 |
0.7%
|
| 8 | Do not know | 3 |
0.1%
|
| Sysmiss | 6 |