| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
3.3%
|
| 1 | One month or less | 28 |
11.5%
|
| 2 | 27 |
11.1%
|
|
| 3 | 38 |
15.6%
|
|
| 4 | 8 |
3.3%
|
|
| 5 | 10 |
4.1%
|
|
| 6 | 70 |
28.7%
|
|
| 7 | 3 |
1.2%
|
|
| 8 | 3 |
1.2%
|
|
| 9 | 5 |
2%
|
|
| 10 | 3 |
1.2%
|
|
| 11 | 2 |
0.8%
|
|
| 12 | 39 |
16%
|
|
| Sysmiss | 1079 |