| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 24 |
6.5%
|
| -7 | Does not apply (spontaneous) | 14 |
3.8%
|
| 0 | Less than one day | 42 |
11.4%
|
| 1 | 39 |
10.6%
|
|
| 2 | 58 |
15.8%
|
|
| 3 | 40 |
10.9%
|
|
| 4 | 12 |
3.3%
|
|
| 5 | 23 |
6.3%
|
|
| 6 | 10 |
2.7%
|
|
| 7 | 24 |
6.5%
|
|
| 8 | 5 |
1.4%
|
|
| 10 | 19 |
5.2%
|
|
| 12 | 2 |
0.5%
|
|
| 13 | 1 |
0.3%
|
|
| 14 | 1 |
0.3%
|
|
| 15 | 18 |
4.9%
|
|
| 16 | 2 |
0.5%
|
|
| 18 | 3 |
0.8%
|
|
| 20 | 9 |
2.5%
|
|
| 21 | 2 |
0.5%
|
|
| 25 | 3 |
0.8%
|
|
| 27 | 1 |
0.3%
|
|
| 30 | 11 |
3%
|
|
| 40 | 1 |
0.3%
|
|
| 60 | 2 |
0.5%
|
|
| 75 | 1 |
0.3%
|
|
| Sysmiss | 849 |