| Value | Category | Cases | |
|---|---|---|---|
| 1 | Essential | 1664 |
58.5%
|
| 2 | Desirable | 920 |
32.3%
|
| 3 | Neither | 244 |
8.6%
|
| 8 | Do not know | 17 |
0.6%
|
| Sysmiss | 5 |