| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 8171 |
46.6%
|
| 2 | Sometimes | 5753 |
32.8%
|
| 3 | Always | 3592 |
20.5%
|
| 7 | N/A | 400 | |
| 8 | Invalid | 3 | |
| 9 | Missing | 220 |