| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 21 |
32.8%
|
|
| 1 | One minute or less | 19 |
29.7%
|
| 2 | 1 |
1.6%
|
|
| 5 | 4 |
6.3%
|
|
| 15 | 1 |
1.6%
|
|
| 20 | 1 |
1.6%
|
|
| 30 | 12 |
18.8%
|
|
| 40 | 1 |
1.6%
|
|
| 50 | 3 |
4.7%
|
|
| 59 | 1 |
1.6%
|
|
| Sysmiss | 195 |