| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 17 |
5.6%
|
|
| 1 | One minute or less | 64 |
21.1%
|
| 3 | 1 |
0.3%
|
|
| 5 | 9 |
3%
|
|
| 8 | 2 |
0.7%
|
|
| 10 | 19 |
6.3%
|
|
| 15 | 27 |
8.9%
|
|
| 20 | 24 |
7.9%
|
|
| 25 | 8 |
2.6%
|
|
| 30 | 56 |
18.4%
|
|
| 35 | 8 |
2.6%
|
|
| 40 | 22 |
7.2%
|
|
| 45 | 31 |
10.2%
|
|
| 50 | 12 |
3.9%
|
|
| 55 | 4 |
1.3%
|
|
| Sysmiss | 60 |