| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3.1%
|
| 1 | One month or less | 9 |
5.5%
|
| 2 | 20 |
12.3%
|
|
| 3 | 76 |
46.6%
|
|
| 4 | 18 |
11%
|
|
| 5 | 6 |
3.7%
|
|
| 6 | 10 |
6.1%
|
|
| 7 | 2 |
1.2%
|
|
| 8 | 4 |
2.5%
|
|
| 9 | 3 |
1.8%
|
|
| 10 | 2 |
1.2%
|
|
| 11 | 1 |
0.6%
|
|
| 12 | 7 |
4.3%
|
|
| Sysmiss | 446 |