| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
9.2%
|
| -7 | Does not apply | 3 |
3.4%
|
| 1 | One day or less | 48 |
55.2%
|
| 2 | 15 |
17.2%
|
|
| 3 | 8 |
9.2%
|
|
| 4 | 2 |
2.3%
|
|
| 5 | 1 |
1.1%
|
|
| 10 | 1 |
1.1%
|
|
| 20 | 1 |
1.1%
|
|
| Sysmiss | 274 |