| Value | Category | Cases | |
|---|---|---|---|
| -1 | True missing | 15 |
0.3%
|
| 1 | All the time | 3463 |
63.2%
|
| 2 | Most of the time | 1141 |
20.8%
|
| 3 | Sometimes | 768 |
14%
|
| 4 | Never | 83 |
1.5%
|
| 99 | Refused to answer | 9 |
0.2%
|