| Value | Category | Cases | |
|---|---|---|---|
| 1 | No problems | 884 |
99.5%
|
| 2 | Little difficulty | 4 |
0.5%
|
| 3 | Moderate difficulty | 0 |
0%
|
| 4 | Serious difficulty | 0 |
0%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 1 |