| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
5.1%
|
| 1 | One month or less | 29 |
12.4%
|
| 2 | 4 |
1.7%
|
|
| 3 | 31 |
13.2%
|
|
| 4 | 4 |
1.7%
|
|
| 5 | 1 |
0.4%
|
|
| 6 | 34 |
14.5%
|
|
| 7 | 3 |
1.3%
|
|
| 8 | 8 |
3.4%
|
|
| 9 | 3 |
1.3%
|
|
| 10 | 16 |
6.8%
|
|
| 11 | 5 |
2.1%
|
|
| 12 | 84 |
35.9%
|
|
| Sysmiss | 1284 |