| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 321 |
54.6%
|
|
| 1 | One minute or less | 137 |
23.3%
|
| 5 | 2 |
0.3%
|
|
| 10 | 2 |
0.3%
|
|
| 15 | 2 |
0.3%
|
|
| 20 | 4 |
0.7%
|
|
| 30 | 109 |
18.5%
|
|
| 40 | 2 |
0.3%
|
|
| 45 | 4 |
0.7%
|
|
| 59 | 5 |
0.9%
|
|
| Sysmiss | 712 |