| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 25 |
9.8%
|
| 1 | One month or less | 42 |
16.4%
|
| 2 | 26 |
10.2%
|
|
| 3 | 45 |
17.6%
|
|
| 4 | 15 |
5.9%
|
|
| 5 | 11 |
4.3%
|
|
| 6 | 33 |
12.9%
|
|
| 7 | 3 |
1.2%
|
|
| 8 | 5 |
2%
|
|
| 9 | 2 |
0.8%
|
|
| 10 | 3 |
1.2%
|
|
| 12 | 46 |
18%
|
|
| Sysmiss | 325 |