| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
12.5%
|
| 0 | 38 |
47.5%
|
|
| 1 | One minute or less | 4 |
5%
|
| 10 | 1 |
1.3%
|
|
| 15 | 1 |
1.3%
|
|
| 25 | 1 |
1.3%
|
|
| 30 | 12 |
15%
|
|
| 37 | 1 |
1.3%
|
|
| 40 | 1 |
1.3%
|
|
| 45 | 4 |
5%
|
|
| 59 | 7 |
8.8%
|
|
| Sysmiss | 69 |