| Value | Category | Cases | |
|---|---|---|---|
| 1 | General purpose | 109 |
50.9%
|
| 2 | Instruction materials | 103 |
48.1%
|
| 3 | Not specified | 0 |
0%
|
| 4 | Other (specify) | 1 |
0.5%
|
| 99 | Don't know | 1 |
0.5%
|
| Sysmiss | Skipped | 0 | |
| Sysmiss | 92 |