| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
8.3%
|
| -7 | Does not apply (spontaneous) | 4 |
8.3%
|
| 0 | Less than one day | 3 |
6.3%
|
| 1 | 1 |
2.1%
|
|
| 2 | 3 |
6.3%
|
|
| 4 | 4 |
8.3%
|
|
| 5 | 6 |
12.5%
|
|
| 6 | 1 |
2.1%
|
|
| 8 | 3 |
6.3%
|
|
| 9 | 1 |
2.1%
|
|
| 10 | 3 |
6.3%
|
|
| 14 | 6 |
12.5%
|
|
| 15 | 1 |
2.1%
|
|
| 28 | 1 |
2.1%
|
|
| 30 | 6 |
12.5%
|
|
| 60 | 1 |
2.1%
|
|
| Sysmiss | 552 |