| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 17 |
19.1%
|
|
| 1 | One minute or less | 3 |
3.4%
|
| 10 | 4 |
4.5%
|
|
| 15 | 6 |
6.7%
|
|
| 20 | 7 |
7.9%
|
|
| 30 | 26 |
29.2%
|
|
| 35 | 3 |
3.4%
|
|
| 40 | 7 |
7.9%
|
|
| 45 | 13 |
14.6%
|
|
| 50 | 3 |
3.4%
|
|
| Sysmiss | 67 |