| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 78 |
35.3%
|
| 1 | One month or less | 27 |
12.2%
|
| 2 | 11 |
5%
|
|
| 3 | 30 |
13.6%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 14 |
6.3%
|
|
| 6 | 25 |
11.3%
|
|
| 7 | 8 |
3.6%
|
|
| 8 | 3 |
1.4%
|
|
| 9 | 2 |
0.9%
|
|
| 10 | 5 |
2.3%
|
|
| 11 | 1 |
0.5%
|
|
| 12 | 16 |
7.2%
|
|
| Sysmiss | 290 |