| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
3%
|
| 1 | One month or less | 16 |
12.1%
|
| 2 | 20 |
15.2%
|
|
| 3 | 32 |
24.2%
|
|
| 4 | 10 |
7.6%
|
|
| 5 | 10 |
7.6%
|
|
| 6 | 15 |
11.4%
|
|
| 7 | 3 |
2.3%
|
|
| 8 | 8 |
6.1%
|
|
| 9 | 3 |
2.3%
|
|
| 10 | 1 |
0.8%
|
|
| 11 | 2 |
1.5%
|
|
| 12 | 8 |
6.1%
|
|
| Sysmiss | 233 |