| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
20.5%
|
| -7 | Does not apply | 5 |
12.8%
|
| 1 | One day or less | 10 |
25.6%
|
| 2 | 4 |
10.3%
|
|
| 3 | 7 |
17.9%
|
|
| 10 | 1 |
2.6%
|
|
| 11 | 1 |
2.6%
|
|
| 35 | 1 |
2.6%
|
|
| 37 | 1 |
2.6%
|
|
| 50 | 1 |
2.6%
|
|
| Sysmiss | 980 |