| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.3%
|
| 1 | One hour or less | 5 |
2.9%
|
| 2 | 12 |
6.9%
|
|
| 3 | 7 |
4%
|
|
| 4 | 16 |
9.1%
|
|
| 5 | 8 |
4.6%
|
|
| 6 | 2 |
1.1%
|
|
| 8 | 6 |
3.4%
|
|
| 10 | 2 |
1.1%
|
|
| 12 | 6 |
3.4%
|
|
| 14 | 1 |
0.6%
|
|
| 15 | 2 |
1.1%
|
|
| 16 | 2 |
1.1%
|
|
| 18 | 2 |
1.1%
|
|
| 20 | 1 |
0.6%
|
|
| 23 | 1 |
0.6%
|
|
| 24 | 16 |
9.1%
|
|
| 27 | 1 |
0.6%
|
|
| 30 | 8 |
4.6%
|
|
| 32 | 3 |
1.7%
|
|
| 34 | 1 |
0.6%
|
|
| 36 | 2 |
1.1%
|
|
| 39 | 1 |
0.6%
|
|
| 40 | 3 |
1.7%
|
|
| 42 | 2 |
1.1%
|
|
| 43 | 1 |
0.6%
|
|
| 45 | 2 |
1.1%
|
|
| 46 | 1 |
0.6%
|
|
| 47 | 1 |
0.6%
|
|
| 48 | 20 |
11.4%
|
|
| 50 | 5 |
2.9%
|
|
| 51 | 1 |
0.6%
|
|
| 52 | 1 |
0.6%
|
|
| 56 | 2 |
1.1%
|
|
| 60 | 1 |
0.6%
|
|
| 64 | 1 |
0.6%
|
|
| 72 | 14 |
8%
|
|
| 76 | 1 |
0.6%
|
|
| 96 | 4 |
2.3%
|
|
| 120 | 5 |
2.9%
|
|
| 156 | 1 |
0.6%
|
|
| Sysmiss | 183 |