| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | One hour or less | 0 |
0%
|
| 2 | 5 |
35.7%
|
|
| 3 | 3 |
21.4%
|
|
| 4 | 1 |
7.1%
|
|
| 5 | 1 |
7.1%
|
|
| 6 | 2 |
14.3%
|
|
| 10 | 1 |
7.1%
|
|
| 24 | 1 |
7.1%
|
|
| Sysmiss | 346 |