| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
4%
|
| -7 | Does not apply (spontaneous) | 120 |
47.8%
|
| 0 | Less than one day | 89 |
35.5%
|
| 1 | 9 |
3.6%
|
|
| 2 | 8 |
3.2%
|
|
| 3 | 2 |
0.8%
|
|
| 4 | 2 |
0.8%
|
|
| 5 | 3 |
1.2%
|
|
| 6 | 1 |
0.4%
|
|
| 7 | 1 |
0.4%
|
|
| 8 | 1 |
0.4%
|
|
| 10 | 1 |
0.4%
|
|
| 14 | 1 |
0.4%
|
|
| 15 | 1 |
0.4%
|
|
| 30 | 1 |
0.4%
|
|
| 168 | 1 |
0.4%
|
|
| Sysmiss | 580 |