| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | One month or less | 8 |
28.6%
|
| 2 | 1 |
3.6%
|
|
| 3 | 7 |
25%
|
|
| 5 | 1 |
3.6%
|
|
| 6 | 3 |
10.7%
|
|
| 9 | 3 |
10.7%
|
|
| 10 | 1 |
3.6%
|
|
| 11 | 1 |
3.6%
|
|
| 12 | 3 |
10.7%
|
|
| Sysmiss | 129 |