| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 36 |
13.6%
|
| -7 | Does not apply (spontaneous) | 4 |
1.5%
|
| 0 | Less than one day | 14 |
5.3%
|
| 1 | 17 |
6.4%
|
|
| 2 | 31 |
11.7%
|
|
| 3 | 25 |
9.4%
|
|
| 4 | 11 |
4.2%
|
|
| 5 | 17 |
6.4%
|
|
| 6 | 3 |
1.1%
|
|
| 7 | 39 |
14.7%
|
|
| 8 | 3 |
1.1%
|
|
| 9 | 2 |
0.8%
|
|
| 10 | 20 |
7.5%
|
|
| 12 | 4 |
1.5%
|
|
| 13 | 1 |
0.4%
|
|
| 14 | 18 |
6.8%
|
|
| 18 | 1 |
0.4%
|
|
| 20 | 2 |
0.8%
|
|
| 21 | 2 |
0.8%
|
|
| 28 | 1 |
0.4%
|
|
| 30 | 7 |
2.6%
|
|
| 40 | 1 |
0.4%
|
|
| 42 | 1 |
0.4%
|
|
| 45 | 1 |
0.4%
|
|
| 48 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|
|
| 90 | 2 |
0.8%
|
|
| Sysmiss | 2432 |