| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes with card | 486 |
49.9%
|
| 2 | Yes with exercise book | 19 |
2%
|
| 3 | Yes from NIDS | 1 |
0.1%
|
| 4 | Yes from memory | 213 |
21.9%
|
| 5 | No with card | 101 |
10.4%
|
| 6 | No with exercise book | 7 |
0.7%
|
| 7 | No from NIDS | 5 |
0.5%
|
| 8 | No from memory | 113 |
11.6%
|
| 9 | Don’t know | 28 |
2.9%
|
| Sysmiss | 1551 |