Value | Category | Cases | |
---|---|---|---|
1 | General purpose | 0 |
0%
|
2 | Instructional materials | 10 |
100%
|
3 | Not specified | 0 |
0%
|
9 | Other (specify) | 0 |
0%
|
99 | NA | 0 |
0%
|
Sysmiss | 1957 |