Value |
Category |
-9 |
DON’T KNOW (SPONTANEOUS) |
0 |
|
1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
9 |
|
10 |
|
15 |
|
20 |
|
30 |
|
50 |
|
60 |
|
200 |
|
490 |
|
500 |
|
600 |
|
Sysmiss |
|
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.