| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.7%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 4 |
2.7%
|
| 1 | 24 |
16%
|
|
| 2 | 52 |
34.7%
|
|
| 3 | 26 |
17.3%
|
|
| 4 | 8 |
5.3%
|
|
| 5 | 8 |
5.3%
|
|
| 7 | 13 |
8.7%
|
|
| 8 | 1 |
0.7%
|
|
| 12 | 1 |
0.7%
|
|
| 14 | 2 |
1.3%
|
|
| 15 | 2 |
1.3%
|
|
| 18 | 1 |
0.7%
|
|
| 20 | 2 |
1.3%
|
|
| 24 | 1 |
0.7%
|
|
| 45 | 1 |
0.7%
|
|
| Sysmiss | 91 |