| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 150 |
90.4%
|
| 2 | Once or twice | 12 |
7.2%
|
| 3 | Sometimes | 2 |
1.2%
|
| 4 | Frequently | 2 |
1.2%
|
| Sysmiss | 1092 |