| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.4%
|
| -7 | Does not apply (spontaneous) | 19 |
22.9%
|
| 0 | Less than one day | 22 |
26.5%
|
| 1 | 10 |
12%
|
|
| 2 | 11 |
13.3%
|
|
| 3 | 8 |
9.6%
|
|
| 4 | 4 |
4.8%
|
|
| 5 | 2 |
2.4%
|
|
| 7 | 2 |
2.4%
|
|
| 10 | 1 |
1.2%
|
|
| 14 | 1 |
1.2%
|
|
| 50 | 1 |
1.2%
|
|
| Sysmiss | 185 |