| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
3.3%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 1 |
3.3%
|
| 1 | 1 |
3.3%
|
|
| 2 | 8 |
26.7%
|
|
| 3 | 3 |
10%
|
|
| 4 | 3 |
10%
|
|
| 5 | 5 |
16.7%
|
|
| 6 | 1 |
3.3%
|
|
| 7 | 1 |
3.3%
|
|
| 9 | 1 |
3.3%
|
|
| 10 | 1 |
3.3%
|
|
| 15 | 1 |
3.3%
|
|
| 20 | 1 |
3.3%
|
|
| 30 | 1 |
3.3%
|
|
| 50 | 1 |
3.3%
|
|
| Sysmiss | 315 |