| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 4 |
6.3%
|
| 2 | 1 |
1.6%
|
|
| 3 | 4 |
6.3%
|
|
| 4 | 3 |
4.7%
|
|
| 5 | 2 |
3.1%
|
|
| 6 | 4 |
6.3%
|
|
| 7 | 12 |
18.8%
|
|
| 8 | 3 |
4.7%
|
|
| 9 | 2 |
3.1%
|
|
| 10 | 7 |
10.9%
|
|
| 14 | 8 |
12.5%
|
|
| 15 | 1 |
1.6%
|
|
| 16 | 2 |
3.1%
|
|
| 18 | 1 |
1.6%
|
|
| 20 | 1 |
1.6%
|
|
| 21 | 2 |
3.1%
|
|
| 30 | 1 |
1.6%
|
|
| 40 | 1 |
1.6%
|
|
| 50 | 2 |
3.1%
|
|
| 60 | 2 |
3.1%
|
|
| 64 | 1 |
1.6%
|
|
| Sysmiss | 93 |