| Value | Category | Cases | |
|---|---|---|---|
| 1 | General purpose | 6 |
33.3%
|
| 2 | Instruction materials | 8 |
44.4%
|
| 3 | Not specified | 0 |
0%
|
| 4 | Other (specify) | 2 |
11.1%
|
| 99 | Don't know | 2 |
11.1%
|
| Sysmiss | Skipped | 0 | |
| Sysmiss | 288 |