| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
10.1%
|
| 1 | Less than one day | 0 |
0%
|
| 7 | 6 |
7.6%
|
|
| 10 | 1 |
1.3%
|
|
| 15 | 10 |
12.7%
|
|
| 20 | 9 |
11.4%
|
|
| 25 | 2 |
2.5%
|
|
| 30 | 17 |
21.5%
|
|
| 35 | 1 |
1.3%
|
|
| 50 | 1 |
1.3%
|
|
| 60 | 9 |
11.4%
|
|
| 80 | 1 |
1.3%
|
|
| 90 | 7 |
8.9%
|
|
| 100 | 1 |
1.3%
|
|
| 300 | 4 |
5.1%
|
|
| 500 | 2 |
2.5%
|
|
| Sysmiss | 940 |