| Value | Category | Cases | |
|---|---|---|---|
| 0 | 818 |
51.3%
|
|
| 1 | Neither read nor write (1) | 778 |
48.7%
|
| 2 | Read but not write (2) | 0 |
0%
|
| 3 | Read and write (3) | 0 |
0%
|
| Sysmiss | Don't know | 0 | |
| Sysmiss | 56 |