| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
5.5%
|
| -7 | Does not apply | 8 |
4%
|
| 1 | One day or less | 7 |
3.5%
|
| 2 | 21 |
10.6%
|
|
| 3 | 49 |
24.6%
|
|
| 4 | 10 |
5%
|
|
| 5 | 41 |
20.6%
|
|
| 6 | 7 |
3.5%
|
|
| 7 | 20 |
10.1%
|
|
| 8 | 3 |
1.5%
|
|
| 10 | 12 |
6%
|
|
| 15 | 3 |
1.5%
|
|
| 20 | 5 |
2.5%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 1 |
0.5%
|
|
| Sysmiss | 561 |