| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
1.6%
|
| -7 | Does not apply (spontaneous) | 33 |
17.7%
|
| 0 | Less than one day | 26 |
14%
|
| 1 | 13 |
7%
|
|
| 2 | 23 |
12.4%
|
|
| 3 | 15 |
8.1%
|
|
| 4 | 10 |
5.4%
|
|
| 5 | 16 |
8.6%
|
|
| 6 | 5 |
2.7%
|
|
| 7 | 8 |
4.3%
|
|
| 8 | 2 |
1.1%
|
|
| 10 | 3 |
1.6%
|
|
| 11 | 1 |
0.5%
|
|
| 12 | 1 |
0.5%
|
|
| 14 | 3 |
1.6%
|
|
| 15 | 7 |
3.8%
|
|
| 16 | 1 |
0.5%
|
|
| 20 | 2 |
1.1%
|
|
| 21 | 1 |
0.5%
|
|
| 30 | 5 |
2.7%
|
|
| 35 | 1 |
0.5%
|
|
| 45 | 4 |
2.2%
|
|
| 48 | 1 |
0.5%
|
|
| 60 | 2 |
1.1%
|
|
| Sysmiss | 821 |