| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | One hour or less | 0 |
0%
|
| 2 | 3 |
27.3%
|
|
| 3 | 1 |
9.1%
|
|
| 10 | 1 |
9.1%
|
|
| 15 | 1 |
9.1%
|
|
| 20 | 1 |
9.1%
|
|
| 30 | 2 |
18.2%
|
|
| 40 | 1 |
9.1%
|
|
| 120 | 1 |
9.1%
|
|
| Sysmiss | 1085 |