| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 21 |
15.9%
|
| -5 | termless | 40 |
30.3%
|
| 1 | less than one month | 3 |
2.3%
|
| 2 | 7 |
5.3%
|
|
| 3 | 3 |
2.3%
|
|
| 4 | 2 |
1.5%
|
|
| 5 | 1 |
0.8%
|
|
| 6 | 8 |
6.1%
|
|
| 10 | 1 |
0.8%
|
|
| 12 | 25 |
18.9%
|
|
| 18 | 2 |
1.5%
|
|
| 24 | 9 |
6.8%
|
|
| 30 | 1 |
0.8%
|
|
| 36 | 2 |
1.5%
|
|
| 60 | 5 |
3.8%
|
|
| 90 | 1 |
0.8%
|
|
| 240 | 1 |
0.8%
|
|
| Sysmiss | 954 |