| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 1 | 1 |
1%
|
|
| 3 | 2 |
2%
|
|
| 4 | 1 |
1%
|
|
| 5 | 2 |
2%
|
|
| 6 | 3 |
3.1%
|
|
| 7 | 5 |
5.1%
|
|
| 10 | 2 |
2%
|
|
| 12 | 1 |
1%
|
|
| 14 | 4 |
4.1%
|
|
| 15 | 7 |
7.1%
|
|
| 20 | 6 |
6.1%
|
|
| 25 | 2 |
2%
|
|
| 30 | 16 |
16.3%
|
|
| 35 | 1 |
1%
|
|
| 36 | 1 |
1%
|
|
| 40 | 8 |
8.2%
|
|
| 45 | 11 |
11.2%
|
|
| 48 | 2 |
2%
|
|
| 50 | 2 |
2%
|
|
| 60 | 6 |
6.1%
|
|
| 65 | 4 |
4.1%
|
|
| 70 | 4 |
4.1%
|
|
| 75 | 1 |
1%
|
|
| 77 | 1 |
1%
|
|
| 80 | 1 |
1%
|
|
| 90 | 2 |
2%
|
|
| 120 | 2 |
2%
|
|
| Sysmiss | 551 |