| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
15.6%
|
| 1 | One hour or less | 0 |
0%
|
| 2 | 1 |
1.3%
|
|
| 6 | 1 |
1.3%
|
|
| 12 | 1 |
1.3%
|
|
| 16 | 4 |
5.2%
|
|
| 20 | 1 |
1.3%
|
|
| 24 | 7 |
9.1%
|
|
| 30 | 7 |
9.1%
|
|
| 32 | 2 |
2.6%
|
|
| 34 | 1 |
1.3%
|
|
| 36 | 4 |
5.2%
|
|
| 38 | 1 |
1.3%
|
|
| 40 | 2 |
2.6%
|
|
| 48 | 6 |
7.8%
|
|
| 50 | 2 |
2.6%
|
|
| 52 | 2 |
2.6%
|
|
| 53 | 1 |
1.3%
|
|
| 60 | 11 |
14.3%
|
|
| 72 | 1 |
1.3%
|
|
| 75 | 1 |
1.3%
|
|
| 120 | 6 |
7.8%
|
|
| 300 | 2 |
2.6%
|
|
| 360 | 1 |
1.3%
|
|
| Sysmiss | 85 |