| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 35 |
40.7%
|
|
| 1 | One minute or less | 14 |
16.3%
|
| 5 | 3 |
3.5%
|
|
| 10 | 3 |
3.5%
|
|
| 15 | 7 |
8.1%
|
|
| 20 | 3 |
3.5%
|
|
| 30 | 17 |
19.8%
|
|
| 35 | 1 |
1.2%
|
|
| 40 | 1 |
1.2%
|
|
| 45 | 1 |
1.2%
|
|
| 50 | 1 |
1.2%
|
|
| Sysmiss | 274 |