| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
6.8%
|
| -7 | Does not apply (spontaneous) | 13 |
6.8%
|
| 0 | Less than one day | 24 |
12.6%
|
| 1 | 30 |
15.7%
|
|
| 2 | 36 |
18.8%
|
|
| 3 | 16 |
8.4%
|
|
| 4 | 5 |
2.6%
|
|
| 5 | 12 |
6.3%
|
|
| 6 | 2 |
1%
|
|
| 7 | 12 |
6.3%
|
|
| 10 | 8 |
4.2%
|
|
| 15 | 7 |
3.7%
|
|
| 20 | 4 |
2.1%
|
|
| 30 | 6 |
3.1%
|
|
| 40 | 1 |
0.5%
|
|
| 45 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| Sysmiss | 837 |