| Value | Category | Cases | |
|---|---|---|---|
| 1 | General purpose | 6 |
75%
|
| 2 | Instructional materials | 1 |
12.5%
|
| 3 | Not specified | 1 |
12.5%
|
| 9 | Other (specify) | 0 |
0%
|
| 99 | NA | 0 |
0%
|
| Sysmiss | 192 |