| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
21.5%
|
| 1 | Less than one day | 8 |
5.9%
|
| 2 | 4 |
3%
|
|
| 3 | 4 |
3%
|
|
| 5 | 4 |
3%
|
|
| 6 | 4 |
3%
|
|
| 7 | 8 |
5.9%
|
|
| 10 | 2 |
1.5%
|
|
| 14 | 14 |
10.4%
|
|
| 15 | 4 |
3%
|
|
| 20 | 1 |
0.7%
|
|
| 30 | 31 |
23%
|
|
| 40 | 2 |
1.5%
|
|
| 45 | 2 |
1.5%
|
|
| 50 | 1 |
0.7%
|
|
| 60 | 3 |
2.2%
|
|
| 90 | 9 |
6.7%
|
|
| 100 | 1 |
0.7%
|
|
| 120 | 1 |
0.7%
|
|
| 180 | 3 |
2.2%
|
|
| Sysmiss | 2820 |