| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
4.9%
|
| 1 | One month or less | 1 |
2.4%
|
| 2 | 3 |
7.3%
|
|
| 3 | 9 |
22%
|
|
| 4 | 8 |
19.5%
|
|
| 5 | 1 |
2.4%
|
|
| 6 | 6 |
14.6%
|
|
| 7 | 7 |
17.1%
|
|
| 9 | 1 |
2.4%
|
|
| 12 | 3 |
7.3%
|
|
| Sysmiss | 110 |