| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
28.1%
|
| -7 | Does not apply (spontaneous) | 1 |
1.8%
|
| 0 | Less than one day | 1 |
1.8%
|
| 1 | 3 |
5.3%
|
|
| 2 | 4 |
7%
|
|
| 3 | 1 |
1.8%
|
|
| 7 | 2 |
3.5%
|
|
| 9 | 1 |
1.8%
|
|
| 10 | 1 |
1.8%
|
|
| 14 | 3 |
5.3%
|
|
| 15 | 1 |
1.8%
|
|
| 18 | 1 |
1.8%
|
|
| 21 | 4 |
7%
|
|
| 28 | 2 |
3.5%
|
|
| 30 | 2 |
3.5%
|
|
| 35 | 2 |
3.5%
|
|
| 36 | 1 |
1.8%
|
|
| 37 | 1 |
1.8%
|
|
| 40 | 1 |
1.8%
|
|
| 42 | 1 |
1.8%
|
|
| 55 | 1 |
1.8%
|
|
| 56 | 1 |
1.8%
|
|
| 60 | 3 |
5.3%
|
|
| 77 | 1 |
1.8%
|
|
| 80 | 1 |
1.8%
|
|
| 90 | 1 |
1.8%
|
|
| Sysmiss | 301 |