| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.3%
|
| 1 | One month or less | 19 |
12.6%
|
| 2 | 40 |
26.5%
|
|
| 3 | 53 |
35.1%
|
|
| 4 | 10 |
6.6%
|
|
| 5 | 6 |
4%
|
|
| 6 | 14 |
9.3%
|
|
| 8 | 2 |
1.3%
|
|
| 9 | 3 |
2%
|
|
| 10 | 1 |
0.7%
|
|
| 11 | 1 |
0.7%
|
|
| Sysmiss | 229 |