| Value |
Category |
| 11 |
|
| 12 |
|
| 18 |
|
| 19 |
|
| 21 |
Full credit |
| 22 |
|
| 28 |
|
| 29 |
|
| 81 |
|
| 82 |
|
| 88 |
Invalid |
| 89 |
|
| 91 |
|
| 92 |
|
| 98 |
|
| 99 |
Missing |
| 77 |
N/A |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.