| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 61 |
38.9%
|
| 1 | One hour or less | 4 |
2.5%
|
| 2 | 1 |
0.6%
|
|
| 8 | 1 |
0.6%
|
|
| 12 | 1 |
0.6%
|
|
| 20 | 1 |
0.6%
|
|
| 24 | 2 |
1.3%
|
|
| 30 | 12 |
7.6%
|
|
| 31 | 1 |
0.6%
|
|
| 32 | 2 |
1.3%
|
|
| 34 | 3 |
1.9%
|
|
| 35 | 2 |
1.3%
|
|
| 36 | 1 |
0.6%
|
|
| 40 | 7 |
4.5%
|
|
| 44 | 1 |
0.6%
|
|
| 45 | 2 |
1.3%
|
|
| 46 | 1 |
0.6%
|
|
| 48 | 8 |
5.1%
|
|
| 50 | 3 |
1.9%
|
|
| 55 | 2 |
1.3%
|
|
| 56 | 1 |
0.6%
|
|
| 60 | 2 |
1.3%
|
|
| 65 | 1 |
0.6%
|
|
| 70 | 1 |
0.6%
|
|
| 72 | 4 |
2.5%
|
|
| 80 | 1 |
0.6%
|
|
| 96 | 2 |
1.3%
|
|
| 100 | 3 |
1.9%
|
|
| 110 | 1 |
0.6%
|
|
| 120 | 6 |
3.8%
|
|
| 130 | 2 |
1.3%
|
|
| 160 | 1 |
0.6%
|
|
| 190 | 1 |
0.6%
|
|
| 200 | 1 |
0.6%
|
|
| 240 | 2 |
1.3%
|
|
| 250 | 1 |
0.6%
|
|
| 360 | 2 |
1.3%
|
|
| 480 | 1 |
0.6%
|
|
| 500 | 1 |
0.6%
|
|
| 576 | 1 |
0.6%
|
|
| 720 | 1 |
0.6%
|
|
| 768 | 1 |
0.6%
|
|
| 1152 | 1 |
0.6%
|
|
| 1500 | 2 |
1.3%
|
|
| 8760 | 1 |
0.6%
|
|
| Sysmiss | 221 |