| Value | Category | Cases | |
|---|---|---|---|
| 1 | Essential | 2579 |
89.4%
|
| 2 | Desirable | 287 |
10%
|
| 3 | Neither | 16 |
0.6%
|
| 8 | (Do not know) | 2 |
0.1%
|
| Sysmiss | 20 |