| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 2 |
2.2%
|
| 0 | Less than one day | 3 |
3.3%
|
| 1 | 2 |
2.2%
|
|
| 2 | 4 |
4.3%
|
|
| 3 | 10 |
10.9%
|
|
| 5 | 10 |
10.9%
|
|
| 7 | 22 |
23.9%
|
|
| 10 | 3 |
3.3%
|
|
| 12 | 1 |
1.1%
|
|
| 14 | 12 |
13%
|
|
| 15 | 4 |
4.3%
|
|
| 20 | 3 |
3.3%
|
|
| 21 | 5 |
5.4%
|
|
| 25 | 1 |
1.1%
|
|
| 30 | 7 |
7.6%
|
|
| 40 | 2 |
2.2%
|
|
| 60 | 1 |
1.1%
|
|
| Sysmiss | 887 |