| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | One month or less | 33 |
31.1%
|
| 2 | 10 |
9.4%
|
|
| 3 | 21 |
19.8%
|
|
| 4 | 6 |
5.7%
|
|
| 5 | 3 |
2.8%
|
|
| 6 | 14 |
13.2%
|
|
| 7 | 1 |
0.9%
|
|
| 8 | 2 |
1.9%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | 2 |
1.9%
|
|
| 12 | 12 |
11.3%
|
|
| Sysmiss | 516 |