| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
7%
|
| -6 | Still in progress | 0 |
0%
|
| 1 | One week or less | 13 |
13%
|
| 2 | 10 |
10%
|
|
| 3 | 17 |
17%
|
|
| 4 | 25 |
25%
|
|
| 5 | 1 |
1%
|
|
| 6 | 1 |
1%
|
|
| 8 | 2 |
2%
|
|
| 10 | 1 |
1%
|
|
| 12 | 3 |
3%
|
|
| 14 | 4 |
4%
|
|
| 15 | 4 |
4%
|
|
| 20 | 2 |
2%
|
|
| 21 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 30 | 7 |
7%
|
|
| 90 | 1 |
1%
|
|
| Sysmiss | 847 |