| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, never | 3621 |
94.6%
|
| 2 | Yes, a few times | 83 |
2.2%
|
| 3 | Yes, most of the time | 29 |
0.8%
|
| 4 | Yes, all of the time | 65 |
1.7%
|
| 99 | Refused | 31 |
0.8%
|
| Sysmiss | 316 |