| Value |
Category |
Cases |
|
| 0 |
no specifgic period |
1 |
|
| 6 |
|
4 |
|
| 8 |
|
1 |
|
| 9 |
|
6 |
|
| 12 |
|
12 |
|
| 24 |
|
2 |
|
| 36 |
|
1 |
|
| 60 |
|
1 |
|
| 72 |
|
1 |
|
| Sysmiss |
|
51279 |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
