| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 68 |
88.3%
|
| 1 | 6 |
7.8%
|
|
| 4 | 1 |
1.3%
|
|
| 5 | 1 |
1.3%
|
|
| 7 | 1 |
1.3%
|
|
| Sysmiss | 109 |