| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 15 |
5.4%
|
| 1 | One month or less | 72 |
25.8%
|
| 2 | 40 |
14.3%
|
|
| 3 | 63 |
22.6%
|
|
| 4 | 15 |
5.4%
|
|
| 5 | 10 |
3.6%
|
|
| 6 | 26 |
9.3%
|
|
| 7 | 7 |
2.5%
|
|
| 8 | 13 |
4.7%
|
|
| 9 | 2 |
0.7%
|
|
| 10 | 3 |
1.1%
|
|
| 11 | 1 |
0.4%
|
|
| 12 | 12 |
4.3%
|
|
| Sysmiss | 1167 |