| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | One month or less | 16 |
11.9%
|
| 2 | 19 |
14.2%
|
|
| 3 | 44 |
32.8%
|
|
| 4 | 5 |
3.7%
|
|
| 5 | 7 |
5.2%
|
|
| 6 | 18 |
13.4%
|
|
| 7 | 2 |
1.5%
|
|
| 8 | 4 |
3%
|
|
| 9 | 4 |
3%
|
|
| 10 | 3 |
2.2%
|
|
| 11 | 4 |
3%
|
|
| 12 | 8 |
6%
|
|
| Sysmiss | 225 |