| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
10.5%
|
| -7 | Does not apply (spontaneous) | 4 |
7%
|
| 0 | Less than one day | 0 |
0%
|
| 2 | 3 |
5.3%
|
|
| 3 | 5 |
8.8%
|
|
| 4 | 4 |
7%
|
|
| 5 | 6 |
10.5%
|
|
| 6 | 2 |
3.5%
|
|
| 7 | 2 |
3.5%
|
|
| 8 | 1 |
1.8%
|
|
| 10 | 3 |
5.3%
|
|
| 14 | 1 |
1.8%
|
|
| 15 | 5 |
8.8%
|
|
| 16 | 1 |
1.8%
|
|
| 20 | 1 |
1.8%
|
|
| 21 | 4 |
7%
|
|
| 30 | 3 |
5.3%
|
|
| 40 | 1 |
1.8%
|
|
| 45 | 2 |
3.5%
|
|
| 60 | 2 |
3.5%
|
|
| 70 | 1 |
1.8%
|
|
| Sysmiss | 592 |