| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 32 |
7.8%
|
| 1 | One hour or less | 5 |
1.2%
|
| 2 | 2 |
0.5%
|
|
| 3 | 9 |
2.2%
|
|
| 4 | 9 |
2.2%
|
|
| 5 | 13 |
3.2%
|
|
| 7 | 1 |
0.2%
|
|
| 8 | 7 |
1.7%
|
|
| 10 | 12 |
2.9%
|
|
| 12 | 6 |
1.5%
|
|
| 14 | 2 |
0.5%
|
|
| 15 | 15 |
3.6%
|
|
| 16 | 12 |
2.9%
|
|
| 18 | 3 |
0.7%
|
|
| 20 | 39 |
9.5%
|
|
| 21 | 2 |
0.5%
|
|
| 22 | 1 |
0.2%
|
|
| 23 | 2 |
0.5%
|
|
| 24 | 27 |
6.6%
|
|
| 25 | 12 |
2.9%
|
|
| 27 | 1 |
0.2%
|
|
| 28 | 3 |
0.7%
|
|
| 30 | 35 |
8.5%
|
|
| 32 | 9 |
2.2%
|
|
| 33 | 3 |
0.7%
|
|
| 34 | 1 |
0.2%
|
|
| 35 | 23 |
5.6%
|
|
| 36 | 1 |
0.2%
|
|
| 40 | 28 |
6.8%
|
|
| 42 | 2 |
0.5%
|
|
| 45 | 5 |
1.2%
|
|
| 48 | 8 |
1.9%
|
|
| 50 | 7 |
1.7%
|
|
| 60 | 1 |
0.2%
|
|
| 64 | 2 |
0.5%
|
|
| 72 | 3 |
0.7%
|
|
| 80 | 2 |
0.5%
|
|
| 96 | 1 |
0.2%
|
|
| 100 | 34 |
8.3%
|
|
| 110 | 1 |
0.2%
|
|
| 120 | 21 |
5.1%
|
|
| 125 | 3 |
0.7%
|
|
| 132 | 1 |
0.2%
|
|
| 150 | 1 |
0.2%
|
|
| 160 | 1 |
0.2%
|
|
| 200 | 2 |
0.5%
|
|
| 240 | 1 |
0.2%
|
|
| 300 | 1 |
0.2%
|
|
| Sysmiss | 535 |