| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.7%
|
| 0 | 50 |
35.2%
|
|
| 1 | One minute or less | 32 |
22.5%
|
| 2 | 1 |
0.7%
|
|
| 3 | 2 |
1.4%
|
|
| 5 | 7 |
4.9%
|
|
| 6 | 1 |
0.7%
|
|
| 10 | 6 |
4.2%
|
|
| 15 | 4 |
2.8%
|
|
| 20 | 6 |
4.2%
|
|
| 25 | 2 |
1.4%
|
|
| 30 | 16 |
11.3%
|
|
| 35 | 2 |
1.4%
|
|
| 40 | 1 |
0.7%
|
|
| 45 | 5 |
3.5%
|
|
| 55 | 2 |
1.4%
|
|
| 59 | 4 |
2.8%
|
|
| Sysmiss | 215 |