| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 15 |
26.3%
|
|
| 1 | One minute or less | 9 |
15.8%
|
| 2 | 1 |
1.8%
|
|
| 5 | 1 |
1.8%
|
|
| 10 | 4 |
7%
|
|
| 20 | 5 |
8.8%
|
|
| 21 | 1 |
1.8%
|
|
| 30 | 16 |
28.1%
|
|
| 40 | 2 |
3.5%
|
|
| 45 | 2 |
3.5%
|
|
| 59 | 1 |
1.8%
|
|
| Sysmiss | 116 |