| Value | Category | Cases | |
|---|---|---|---|
| -1 | True missing | 13 |
0.2%
|
| 0 | 0 | 660 |
12%
|
| 1 | 1 | 498 |
9.1%
|
| 2 | 2 | 1064 |
19.4%
|
| 3 | 3 | 1141 |
20.8%
|
| 4 | 4 | 730 |
13.3%
|
| 5 | 5 | 1373 |
25.1%
|