| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes with card | 774 |
36.1%
|
| 2 | Yes with exercise book | 61 |
2.8%
|
| 3 | Yes from NIDS | 4 |
0.2%
|
| 4 | Yes from memory | 939 |
43.8%
|
| 5 | No with card | 127 |
5.9%
|
| 6 | No with exercise book | 7 |
0.3%
|
| 7 | No from NIDS | 0 |
0%
|
| 8 | No from memory | 149 |
6.9%
|
| 98 | Don't know | 85 |
4%
|
| Sysmiss | 13630 |