| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 38 |
1.2%
|
| 2 | Sometimes | 24 |
0.8%
|
| 3 | No | 638 |
20.6%
|
| 4 | N/A | 2395 |
77.4%
|
| Sysmiss | 129 |