| Value |
Category |
Cases |
|
| -9 |
Don't know (spontaneous) |
0 |
|
| 0 |
None |
0 |
|
| 600 |
|
1 |
|
| 9000 |
|
1 |
|
| 15000 |
|
1 |
|
| 20000 |
|
1 |
|
| Sysmiss |
|
141 |
|
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.
