| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 15 |
6.9%
|
| -7 | Does not apply (spontaneous) | 9 |
4.1%
|
| 0 | Less than one day | 85 |
39.2%
|
| 1 | 32 |
14.7%
|
|
| 2 | 21 |
9.7%
|
|
| 3 | 12 |
5.5%
|
|
| 4 | 4 |
1.8%
|
|
| 5 | 8 |
3.7%
|
|
| 6 | 1 |
0.5%
|
|
| 7 | 10 |
4.6%
|
|
| 8 | 1 |
0.5%
|
|
| 10 | 5 |
2.3%
|
|
| 12 | 1 |
0.5%
|
|
| 14 | 6 |
2.8%
|
|
| 15 | 2 |
0.9%
|
|
| 21 | 1 |
0.5%
|
|
| 30 | 4 |
1.8%
|
|
| Sysmiss | 1508 |